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a

  
, A  
      n   pl   , a's, A's, As  
1    the first letter and first vowel of the modern English alphabet  
2    any of several speech sounds represented by this letter, in English as in take, bag, calm, shortage, or cobra  
3      (Also called)    alpha   the first in a series, esp. the highest grade or mark, as in an examination  
4    from A to Z   from start to finish, thoroughly and in detail  


A  
      symbol for  
1      (Music)  
a    a note having a frequency of 440 hertz (A above middle C) or this value multiplied or divided by any power of 2; the sixth note of the scale of C major  
b    a key, string, or pipe producing this note  
c    the major or minor key having this note as its tonic  
2    a human blood type of the ABO group, containing the A antigen  
3    (in Britain) a major arterial road  
the A3 runs from London to Portsmouth     
4      (formerly, in Britain)  
a    a film certified for viewing by anyone, but which contains material that some parents may not wish their children to see  
b    (as modifier)  
an A film     
5    mass number  
6    the number 10 in hexadecimal notation  
7      (Cards)   ace  
8    argon (now superseded by Ar)  
9    ampere(s)  
10      (Also)    at   ampere-turn  
11    absolute (temperature)  
12    (in circuit diagrams) ammeter  
13    area  
14    in combination   atomic  
an A-bomb, an A-plant     
15      (Chem)   affinity  
16      (Biochem)   adenine  
17      (Logic)   a universal affirmative categorical proposition, such as all men are mortal: often symbolized as SaP  
   Compare       E       I   2       O   1  
     (from Latin a(ffirmo) I affirm)  
18   
a    a person whose job is in top management, or who holds a senior administrative or professional position  
b    (as modifier)  
an A worker        (See also)        occupation groupings  
19   
      international car registration for   Austria  
Å  
      symbol for   angstrom unit  
A.  
      abbrev. for  
1    acre(s) or acreage  
2    America(n)  
3    answer  
A & E  
      abbrev. for   Accident and Emergency (in hospitals)  
A & M  
      abbrev. for  
1    Agricultural and Mechanical  
2    Ancient and Modern (hymn book)  
A & P     (in New Zealand)  
      abbrev. for   Agricultural and Pastoral (Association, Show, etc.)  
A & R  
      abbrev. for   artists and repertoire  
A'asia  
      abbrev. for   Australasia  
à bas     (French)  
      interj   down with!  
A-bomb  
      n      short for       atomic bomb  
à bon marché     (French)  
      adv   at a bargain price  
A bursary  
      n     (N.Z)   the higher of two bursaries available for students entering university, polytechnic, etc.  
   Compare       B bursary  
à cheval     (French)  
      adv   (of a bet, esp. in roulette) made on two adjacent numbers, cards, etc.  
     (literally: on horseback)  
A.D.   , AD     (indicating years numbered from the supposed year of the birth of Christ)  
      abbrev. for   anno Domini  
70 a.d         Compare       B.C  
     (Latin: in the year of the Lord)  
In strict usage, a.d. is only employed with specific years: he died in 1621 a.d., but he died in the 17th century (and not the 17th century a.d.). Formerly the practice was to write a.d. preceding the date (a.d. 1621), and it is also strictly correct to omit in when a.d. is used, since this is already contained in the meaning of the Latin anno Domini (in the year of Our Lord), but this is no longer general practice. b.c. is used with both specific dates and indications of the period: Heraclitus was born about 540 b.c.; the battle took place in the 4th century b.c.  
à deux     (French)  
      adj  
      adv   of or for two persons  
A.E.   , AE  
      n      the pen name of (George William)       Russell  
A/F     (in auction catalogues, etc.)  
      abbrev. for   as found  
A-frame  
      adj   (of a house) constructed with an A-shaped elevation  
à gogo  
      adj  
      adv  
Informal   as much as one likes; galore  
champagne à gogo     
     (C20: from French)  
A horizon  
      n   the top layer of a soil profile, usually dark coloured and containing humus, from which the soluble salts have been leached  
   See       B horizon       C horizon  
à la     (French)  
      prep  
1    in the manner or style of  
2    as prepared in (a particular place) or by or for (a particular person)  
     (C17: from French, short for à la mode de in the style of)  
à la carte     (French)  
      adj  
      adv  
1    (of a menu or a section of a menu) having dishes listed separately and individually priced  
   Compare       table d'hôte  
2    (of a dish) offered on such a menu; not part of a set meal  
     (C19: from French, literally: according to the card)  
à la king  
      adj   usually postpositive   cooked in a cream sauce with mushrooms and green peppers  
à la mode     (French)  
      adj  
1    fashionable in style, design, etc.  
2    (of meats) braised with vegetables in wine  
3      (Chiefly U.S. and Canadian)   (of desserts) served with ice cream  
     (C17: from French: according to the fashion)  
A level  
      n     (in Britain)  
1   
a    the advanced level of a subject taken for General Certificate of Education (GCE)  
b    (as modifier)  
A level maths     
2    a pass in a particular subject at A level  
she has three A levels     
A-line  
      adj   (of a garment, esp. a skirt or dress) flaring slightly from the waist or shoulders  
A list  
      n  
a    the most socially desirable category  
b    (as modifier)  
an A-list event        (Compare)        B list  
A.N. Other  
      n     (Brit)   an unnamed person: used in team lists, etc., to indicate a place that remains to be filled  
A/O   , a/o     (Accounting, etc.)  
      abbrev. for   account of  
A-OK   , A-okay  
      adj  
Informal     (chiefly U.S.)   in perfect working order; excellent  
     (C20: from a(ll systems) OK)  
à pied     (French)  
      adv  
      adj   postpositive   on foot  
A shares  
      pl n     (Brit)   those ordinary shares in a company which carry restricted voting rights or other restrictions  
A-side  
      n   the side of a gramophone record regarded as the more important one  
A sizes   , A series  
      n   a series of paper sizes approved by the International Standards Organization, running from 2AO to A7, each size (defined in mm) being half as large as the one preceding it, as follows: 2AO,1189x1682; AO, 841x1189; A1, 594x841; A2, 420x594; A3, 297x420; A4, 210x297; A5, 148x210; A6, 105x148; A7, 74x105  
A to J     (in New Zealand)  
      abbrev. for   Appendices to Journals (of the House of Representatives or Parliament)  
C/A  
      abbrev. for  
1    capital account  
2    credit account  
3    current account  
Category A  
      adj  
1    (of a prisoner) regarded as highly dangerous and therefore requiring constant observation and maximum security  
2    (of a prison or prison unit) designed for such prisoners  
chacun à son goût     (French)   each to his own taste  
class-A amplifier  
      n   an electronic amplifier in which the output current flows for the whole of the input signal cycle  
coenzyme A  
      n   a constituent of biological cells that functions as the agent of acylation in metabolic reactions,   (Abbrev.)    CoA  
cyclosporin-A  
      n   a drug extracted from a fungus and used in transplant surgery to suppress the body's immune mechanisms, and so prevent rejection of an organ  
D/A   , d.a.  
      abbrev. for  
1    deposit account  
2      (Commerce)   documents against acceptance  
dos-à-dos     (French)  
      n  
1    a seat on which the users sit back to back  
2       an alternative spelling of       do-si-do  
     (literally: back to back)  
F.A.M.  
      abbrev. for   Free and Accepted Masons  
   See       Freemason  
folie à deux  
      n     (Psychiatry)   mental illness occurring simultaneously in two intimately related persons who share some of the elements of the illness, such as delusions  
     (French: madness involving two (people))  
Gustavo A. Madero     (Spanish)  
      n      the former name (1931--71) of       Guadalupe Hidalgo  
hepatitis A  
      n   a form of hepatitis caused by a virus transmitted in contaminated food or drink  
Linear A  
      n   a hitherto undeciphered script, partly syllabic and partly ideographic, found on tablets and pottery in Crete and dating mainly from the 15th century b.c.  
ménage à trois     (French)  
      n   pl   , ménages à trois   a sexual arrangement involving a married couple and the lover of one of them  
     (literally: household of three)  
non-A, non-B hepatitis  
      n   a form of viral hepatitis, not caused by the agents responsible for hepatitis A and hepatitis B, that is commonly transmitted by infected blood transfusions. The causative virus has been isolated,   (Also called)    hepatitis C  
pied-à-terre  
      n   pl   , pieds-à-terre   a flat, house, or other lodging for secondary or occasional use  
     (French, literally: foot on (the) ground)  
Pointe-à-Pitre     (French)  
      n   the chief port of Guadeloupe, on SW Grande Terre Island in the Caribbean. Pop.: 26029 (1990)  
R & A  
      abbrev. for   Royal and Ancient (Golf Club, St Andrews)  
roman à clef     (French)  
      n   pl   , romans à clef   a novel in which real people are depicted under fictitious names  
     (literally: novel with a key)  
tête-à-tête  
      n   pl   , -têtes, -tête  
1   
a    a private conversation between two people  
b    (as modifier)  
a tête-à-tête conversation     
2    a small sofa for two people, esp. one that is S-shaped in plan so that the sitters are almost face to face  
      adv  
3    intimately; in private  
     (C17: from French, literally: head to head)  
Thomas à Kempis  
      n      See (Thomas à)       Kempis  
tout à fait     (French)  
      adv   completely; absolutely  
triple A  
      n     (Military)   anti-aircraft artillery: written as AAA  
U.S.A.   , USA  
      abbrev. for   United States of America  
UV-A   , UVA  
      abbrev. for   ultraviolet radiation with a range of 320--380 nanometres  
V and A     (in Britain)  
      abbrev. for   Victoria and Albert Museum  
vis-à-vis  
      prep  
1    in relation to; regarding  
2    face to face with; opposite  
      adv  
      adj  
3    face to face; opposite  
      n   pl   , vis-à-vis  
4    a person or thing that is situated opposite to another  
5    a person who corresponds to another in office, capacity, etc.; counterpart  
6    an upholstered sofa; tête-à-tête  
7    a type of horse-drawn carriage in which the passengers sit opposite one another  
8    a coin having an obverse upon which two portraits appear facing each other  
     (C18: French, from vis face)  
vitamin A  
      n   a fat-soluble yellow unsaturated alcohol occurring in green and yellow vegetables (esp. carrots), butter, egg yolk, and fish-liver oil (esp. halibut oil). It is essential for the prevention of night blindness and the protection of epithelial tissue. Formula: C20H30O,   (Also called)    vitamin A1, retinol  
English Collins Dictionary - English Definition & Thesaurus  
Collins
A  
      symbol for  
1      (Music)  
a    a note having a frequency of 440 hertz (A above middle C) or this value multiplied or divided by any power of 2; the sixth note of the scale of C major  
b    a key, string, or pipe producing this note  
c    the major or minor key having this note as its tonic  
2    a human blood type of the ABO group, containing the A antigen  
3    (in Britain) a major arterial road  
the A3 runs from London to Portsmouth     
4      (formerly, in Britain)  
a    a film certified for viewing by anyone, but which contains material that some parents may not wish their children to see  
b    (as modifier)  
an A film     
5    mass number  
6    the number 10 in hexadecimal notation  
7      (Cards)   ace  
8    argon (now superseded by Ar)  
9    ampere(s)  
10      (Also)    at   ampere-turn  
11    absolute (temperature)  
12    (in circuit diagrams) ammeter  
13    area  
14    in combination   atomic  
an A-bomb, an A-plant     
15      (Chem)   affinity  
16      (Biochem)   adenine  
17      (Logic)   a universal affirmative categorical proposition, such as all men are mortal: often symbolized as SaP  
   Compare       E       I   2       O   1  
     (from Latin a(ffirmo) I affirm)  
18   
a    a person whose job is in top management, or who holds a senior administrative or professional position  
b    (as modifier)  
an A worker        (See also)        occupation groupings  
19   
      international car registration for   Austria  


Å  
      symbol for   angstrom unit  
A.  
      abbrev. for  
1    acre(s) or acreage  
2    America(n)  
3    answer  
A & E  
      abbrev. for   Accident and Emergency (in hospitals)  
A & M  
      abbrev. for  
1    Agricultural and Mechanical  
2    Ancient and Modern (hymn book)  
A & P     (in New Zealand)  
      abbrev. for   Agricultural and Pastoral (Association, Show, etc.)  
A & R  
      abbrev. for   artists and repertoire  
A'asia  
      abbrev. for   Australasia  
à bas     (French)  
      interj   down with!  
A-bomb  
      n      short for       atomic bomb  
à bon marché     (French)  
      adv   at a bargain price  
A bursary  
      n     (N.Z)   the higher of two bursaries available for students entering university, polytechnic, etc.  
   Compare       B bursary  
à cheval     (French)  
      adv   (of a bet, esp. in roulette) made on two adjacent numbers, cards, etc.  
     (literally: on horseback)  
A.D.   , AD     (indicating years numbered from the supposed year of the birth of Christ)  
      abbrev. for   anno Domini  
70 a.d         Compare       B.C  
     (Latin: in the year of the Lord)  
In strict usage, a.d. is only employed with specific years: he died in 1621 a.d., but he died in the 17th century (and not the 17th century a.d.). Formerly the practice was to write a.d. preceding the date (a.d. 1621), and it is also strictly correct to omit in when a.d. is used, since this is already contained in the meaning of the Latin anno Domini (in the year of Our Lord), but this is no longer general practice. b.c. is used with both specific dates and indications of the period: Heraclitus was born about 540 b.c.; the battle took place in the 4th century b.c.  
à deux     (French)  
      adj  
      adv   of or for two persons  
A.E.   , AE  
      n      the pen name of (George William)       Russell  
A/F     (in auction catalogues, etc.)  
      abbrev. for   as found  
A-frame  
      adj   (of a house) constructed with an A-shaped elevation  
à gogo  
      adj  
      adv  
Informal   as much as one likes; galore  
champagne à gogo     
     (C20: from French)  
A horizon  
      n   the top layer of a soil profile, usually dark coloured and containing humus, from which the soluble salts have been leached  
   See       B horizon       C horizon  
à la     (French)  
      prep  
1    in the manner or style of  
2    as prepared in (a particular place) or by or for (a particular person)  
     (C17: from French, short for à la mode de in the style of)  
à la carte     (French)  
      adj  
      adv  
1    (of a menu or a section of a menu) having dishes listed separately and individually priced  
   Compare       table d'hôte  
2    (of a dish) offered on such a menu; not part of a set meal  
     (C19: from French, literally: according to the card)  
à la king  
      adj   usually postpositive   cooked in a cream sauce with mushrooms and green peppers  
à la mode     (French)  
      adj  
1    fashionable in style, design, etc.  
2    (of meats) braised with vegetables in wine  
3      (Chiefly U.S. and Canadian)   (of desserts) served with ice cream  
     (C17: from French: according to the fashion)  
A level  
      n     (in Britain)  
1   
a    the advanced level of a subject taken for General Certificate of Education (GCE)  
b    (as modifier)  
A level maths     
2    a pass in a particular subject at A level  
she has three A levels     
A-line  
      adj   (of a garment, esp. a skirt or dress) flaring slightly from the waist or shoulders  
A list  
      n  
a    the most socially desirable category  
b    (as modifier)  
an A-list event        (Compare)        B list  
A.N. Other  
      n     (Brit)   an unnamed person: used in team lists, etc., to indicate a place that remains to be filled  
A/O   , a/o     (Accounting, etc.)  
      abbrev. for   account of  
A-OK   , A-okay  
      adj  
Informal     (chiefly U.S.)   in perfect working order; excellent  
     (C20: from a(ll systems) OK)  
à pied     (French)  
      adv  
      adj   postpositive   on foot  
A shares  
      pl n     (Brit)   those ordinary shares in a company which carry restricted voting rights or other restrictions  
A-side  
      n   the side of a gramophone record regarded as the more important one  
A sizes   , A series  
      n   a series of paper sizes approved by the International Standards Organization, running from 2AO to A7, each size (defined in mm) being half as large as the one preceding it, as follows: 2AO,1189x1682; AO, 841x1189; A1, 594x841; A2, 420x594; A3, 297x420; A4, 210x297; A5, 148x210; A6, 105x148; A7, 74x105  
A to J     (in New Zealand)  
      abbrev. for   Appendices to Journals (of the House of Representatives or Parliament)  
C/A  
      abbrev. for  
1    capital account  
2    credit account  
3    current account  
Category A  
      adj  
1    (of a prisoner) regarded as highly dangerous and therefore requiring constant observation and maximum security  
2    (of a prison or prison unit) designed for such prisoners  
chacun à son goût     (French)   each to his own taste  
class-A amplifier  
      n   an electronic amplifier in which the output current flows for the whole of the input signal cycle  
coenzyme A  
      n   a constituent of biological cells that functions as the agent of acylation in metabolic reactions,   (Abbrev.)    CoA  
cyclosporin-A  
      n   a drug extracted from a fungus and used in transplant surgery to suppress the body's immune mechanisms, and so prevent rejection of an organ  
D/A   , d.a.  
      abbrev. for  
1    deposit account  
2      (Commerce)   documents against acceptance  
dos-à-dos     (French)  
      n  
1    a seat on which the users sit back to back  
2       an alternative spelling of       do-si-do  
     (literally: back to back)  
F.A.M.  
      abbrev. for   Free and Accepted Masons  
   See       Freemason  
folie à deux  
      n     (Psychiatry)   mental illness occurring simultaneously in two intimately related persons who share some of the elements of the illness, such as delusions  
     (French: madness involving two (people))  
Gustavo A. Madero     (Spanish)  
      n      the former name (1931--71) of       Guadalupe Hidalgo  
hepatitis A  
      n   a form of hepatitis caused by a virus transmitted in contaminated food or drink  
Linear A  
      n   a hitherto undeciphered script, partly syllabic and partly ideographic, found on tablets and pottery in Crete and dating mainly from the 15th century b.c.  
ménage à trois     (French)  
      n   pl   , ménages à trois   a sexual arrangement involving a married couple and the lover of one of them  
     (literally: household of three)  
non-A, non-B hepatitis  
      n   a form of viral hepatitis, not caused by the agents responsible for hepatitis A and hepatitis B, that is commonly transmitted by infected blood transfusions. The causative virus has been isolated,   (Also called)    hepatitis C  
pied-à-terre  
      n   pl   , pieds-à-terre   a flat, house, or other lodging for secondary or occasional use  
     (French, literally: foot on (the) ground)  
Pointe-à-Pitre     (French)  
      n   the chief port of Guadeloupe, on SW Grande Terre Island in the Caribbean. Pop.: 26029 (1990)  
R & A  
      abbrev. for   Royal and Ancient (Golf Club, St Andrews)  
roman à clef     (French)  
      n   pl   , romans à clef   a novel in which real people are depicted under fictitious names  
     (literally: novel with a key)  
tête-à-tête  
      n   pl   , -têtes, -tête  
1   
a    a private conversation between two people  
b    (as modifier)  
a tête-à-tête conversation     
2    a small sofa for two people, esp. one that is S-shaped in plan so that the sitters are almost face to face  
      adv  
3    intimately; in private  
     (C17: from French, literally: head to head)  
Thomas à Kempis  
      n      See (Thomas à)       Kempis  
tout à fait     (French)  
      adv   completely; absolutely  
triple A  
      n     (Military)   anti-aircraft artillery: written as AAA  
U.S.A.   , USA  
      abbrev. for   United States of America  
UV-A   , UVA  
      abbrev. for   ultraviolet radiation with a range of 320--380 nanometres  
V and A     (in Britain)  
      abbrev. for   Victoria and Albert Museum  
vis-à-vis  
      prep  
1    in relation to; regarding  
2    face to face with; opposite  
      adv  
      adj  
3    face to face; opposite  
      n   pl   , vis-à-vis  
4    a person or thing that is situated opposite to another  
5    a person who corresponds to another in office, capacity, etc.; counterpart  
6    an upholstered sofa; tête-à-tête  
7    a type of horse-drawn carriage in which the passengers sit opposite one another  
8    a coin having an obverse upon which two portraits appear facing each other  
     (C18: French, from vis face)  
vitamin A  
      n   a fat-soluble yellow unsaturated alcohol occurring in green and yellow vegetables (esp. carrots), butter, egg yolk, and fish-liver oil (esp. halibut oil). It is essential for the prevention of night blindness and the protection of epithelial tissue. Formula: C20H30O,   (Also called)    vitamin A1, retinol  

English Collins Dictionary - English Definition & Thesaurus  

Collins
a          [1]     (stressed or emphatic)  
      determiner   indefinite article; used before an initial consonant. Compare an1  
1    used preceding a singular countable noun, if the noun is not previously specified or known  
a dog, a terrible disappointment     
2    used preceding a proper noun to indicate that a person or thing has some of the qualities of the one named  
a Romeo, a Shylock     
3    used preceding a noun or determiner of quantity  
a cupful, a dozen eggs, a great many, to read a lot     
4    used preceding a noun indicating a concrete or abstract thing capable of being divided  
half a loaf, a quarter of a minute     
5    preceded by: once, twice, several times, etc.   each or every; per  
once a day, fifty pence a pound     
6    a certain; one  
to change policy at a stroke, a Mr Jones called     
7    preceded by: not   any at all  
not a hope        (Compare)        the   1  

English Collins Dictionary - English Definition & Thesaurus  

Collins
a          [2]  
      vb      an informal or dialect word for       have  
they'd a said if they'd known     

English Collins Dictionary - English Definition & Thesaurus  

Collins
a          [3]  
      prep      (usually linked to the preceding noun) an informal form of       of  
sorta sad, a kinda waste     

English Collins Dictionary - English Definition & Thesaurus  

Collins

a priori

  
1    deduced, deductive, from cause to effect, inferential  
2    conjectural, postulated, postulational, presumptive, self-evident, suppositional, theoretical  

English Collins Dictionary - English synonyms & Thesaurus  

See also:

a, a, a, a

! a turn n.
a short performance

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Collaborative Dictionary     English Definition
n.
my idiot of a brother that monster of a boss
de: mon imbécile de frère, ce monstre de patron
v.
borrow a cigarette
[UK] Ex: Can I bum a fag ?
exp.
quite a lot
we came in for a fair bit of criticism; I've travelled in Asia a fair bit
exp.
a difficult time
exp.
be a man
familiar
exp.
make a sensational announcement
[Fig.] E.g.: Today's newspapers dropped a bomb about the President's past.
exp.
give a phone call
E.g.: Just give me a ring when you want to go out.
exp.
have a great time; enjoy oneself
adv.
in a line, continuously, in quick succession
exp.
not to be able to act like a man, be a pussy
slang
exp.
sleep for a short period of time, have a light sleep
exp.
1. break; fall apart; 2. be in a bad mood
exp.
behave in a manner that is commonly considered as specific to women
[Fam.] it is used most frequently when referring to men who show lack of courage or an excessive shyness or sensitivity. E.g Don't be a pussy; You're such a pussy
v.
leave without paying (in a restaurant for example)
[Slang] aka: dine and dash
id.
put a stop to something
v.
have a ​difficult ​time
v.
take a decision based on one's subjective conclusions, when objective evidence is not available
exp.
a problem, a trouble, a hiccup
the fly in the ointment that summer was the terrible weather: l' ennui cet été là fut le mauvais temps.
v.
have a look at sth
[UK];[Slang] Comes from cockney rhyming slang for "butcher's hook" = "look" Ex.: A: "What are you looking at?" B: "I'm just having a butcher's at this butcher's hook!"
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