base period definition, base period meaning | English dictionary

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base period


      n     (Statistics)   a neutral period used as a standard for comparison in constructing an index to express a variable factor: 100 is usually taken as the index number for the variable in the base period  
English Collins Dictionary - English Definition & Thesaurus  
base          [1]  
1    the bottom or supporting part of anything  
2    the fundamental or underlying principle or part, as of an idea, system, or organization; basis  
a    a centre of operations, organization, or supply  
the climbers made a base at 8000 feet     
b    (as modifier)  
base camp     
4    a centre from which military activities are coordinated  
5    anything from which a process, as of measurement, action, or thought, is or may be begun; starting point  
the new discovery became the base for further research     
6    the main ingredient of a mixture  
to use rice as a base in cookery     
7    a chemical compound that combines with an acid to form a salt and water. A solution of a base in water turns litmus paper blue, produces hydroxyl ions, and has a pH greater than 7. Bases are metal oxides or hydroxides or amines  
   See also       Lewis base  
8    a medium such as oil or water in which the pigment is dispersed in paints, inks, etc.; vehicle  
9    the inorganic material on which the dye is absorbed in lake pigments; carrier  
10      (Biology)  
a    the part of an organ nearest to its point of attachment  
b    the point of attachment of an organ or part  
11    the bottommost layer or part of anything  
12      (Architect)  
a    the lowest division of a building or structure  
b    the lower part of a column or pier  
13       another word for       baseline       2  
14    the lower side or face of a geometric construction  
15      (Maths)  
a    the number of distinct single-digit numbers in a counting system, and so the number represented as 10 in a place-value system  
the binary system has two digits, 0 and 1, and 10 to base two represents 2         See       place-value  
b    (of a logarithm or exponential) the number whose powers are expressed  
since 1000 = 103, the logarithm of 1000 to base 10 is 3     
c    (of a mathematical structure) a substructure from which the given system can be generated  
d    the initial instance from which a generalization is proven by mathematical induction  
16      (Logic, maths, Also called)   base clause   the initial element of a recursive definition, that defines the first element of the infinite sequence generated thereby  
17      (Linguistics)  
a    a root or stem  
b       See       base component  
18      (Electronics)   the region in a transistor between the emitter and collector  
19      (Photog)   the glass, paper, or cellulose-ester film that supports the sensitized emulsion with which it is coated  
20      (Heraldry)   the lower part of the shield  
21      (Jewellery)   the quality factor used in pricing natural pearls  
22    a starting or finishing point in any of various games  
23      (Baseball)   any of the four corners of the diamond, which runners have to reach in order to score  
24    get to first base     (U.S. and Canadian)  
informal   to accomplish the first stage in a project or a series of objectives  
25    off base     (U.S. and Canadian)  
informal   wrong or badly mistaken  
26      (Chiefly U.S. and Canadian)   to make contact  
27    tr foll by: on or upon   to use as a basis (for); found (on)  
your criticisms are based on ignorance     
28    often foll by: at or in   to station, post, or place (a person or oneself)  
     (C14: from Old French, from Latin basis pedestal; see basis)  

English Collins Dictionary - English Definition & Thesaurus  




1    bed, bottom, foot, foundation, groundwork, pedestal, rest, stand, support  
2    basis, core, essence, essential, fundamental, heart, key, origin, principle, root, source  
3    camp, centre, headquarters, home, post, settlement, starting point, station  
4    build, construct, depend, derive, establish, found, ground, hinge, locate, station  
1    apex, crest, crown, peak, summit, top, vertex  

English Collins Dictionary - English synonyms & Thesaurus  

Collaborative Dictionary     English Definition
Late stage of the Triassic period
climate-based hypotension
Lesewut is a German word for "reading craze" (literally) used to describe a specific period in the intellectual history of Germany from the late eighteenth century onward.
a sound (usually a song, jingle) that one hears mentally for a certain period of time
distinctive scent that accompanies the rain and rises up from the ground especially after a period of warm and dry weather
Ex.: And we could smell the scent of wheat and petrichor rising up in the air as a silent clamour.
a series of tweets on the same topic published in a short period
sleep for a short period of time, have a light sleep
a website that did not undergo any change for a long period of time
1. [Rel.] expression used to describe metaphorically a period of ignorance and spiritual crisis that precedes the communion with Divinity ; 2. in a larger meaning, it is used when refering to having a hard time, going through a phase of pessimism, sadness, failure etc.
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