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b , B 
  n pl , b's, B's, Bs 
1 the second letter and first consonant of the modern English alphabet 
2 a speech sound represented by this letter, usually a voiced bilabial stop, as in bell 
3  (Also)  beta the second in a series, esp. the second highest grade in an examination 

b  (Chess)  See  →  algebraic notation 
B 
  symbol for 
1  (Music) 
a a note having a frequency of 493.88 hertz (B above middle C) or this value multiplied or divided by any power of 2; the seventh 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 the supporting or less important of two things 
the B side of a record  
3 a human blood type of the ABO group, containing the B antigen 
4 (in Britain) a secondary road 
5 the number 11 in hexadecimal notation 
6  (Chem) boron 
7 magnetic flux density 
8  (Chess) bishop 
9 (on Brit. pencils, signifying degree of softness of lead) black 
B, 2B, 3B   Compare  →  H  →  5 
10  (Also)  b  (Physics) bel 
11  (Physics) baryon number 
12 balboa 
13 belga 
14 bolivar 
15  (Photog) B-setting 
16 
a a person whose job is in middle management, or who holds an intermediate administrative or professional position 
b (as modifier) 
a B worker   (See also)   →  occupation groupings 
17 
  international car registration for Belgium 
b. 
  abbrev. for 
1 born 
2  (Cricket) bowled 
3  (Cricket) bye 
b. , B. 
  abbrev. for 
1  (Music) bass or basso 
2 billion 
3 book 
4 breadth 
B. 
  abbrev. for 
1 (on maps, etc.) bay 
2 Bible 
3 British 
B-  (of U.S. military aircraft) 
  abbrev. for bomber 
B-52  
B & B 
  abbrev. for bed and breakfast 
B & W 
  abbrev. for black and white 
B-boy 
  n a male rap-music fan, who typically can be identified by his casual style of dress 
  (C20: from Bronx boy) 
B bursary 
  n  (N.Z.) the lower of two bursaries available for students entering university, polytechnic, etc. 
 Compare  →  A bursary 
B.C. , BC 
  abbrev. for (indicating years numbered back from the supposed year of the birth of Christ) before Christ 
in 54 b.c. Caesar came   Compare  →  A.D 
See at a.d. 
B-cell 
  n  another name for  →  B-lymphocyte 
B complex 
  n  short for  →  vitamin B complex 
B/D 
  abbrev. for 
1 bank draft 
2  (Commerce) bills discounted 
3  (Also)  b/d  (Book-keeping) brought down 
B/E , BE, b.e. 
  abbrev. for bill of exchange 
B/F , b/f  (Book-keeping) 
  abbrev. for brought forward 
B horizon 
  n the layer of a soil profile immediately below the A horizon, containing deposits of leached material 
b.i.d.  (in prescriptions) 
  abbrev. for bis in die 
  (Latin: twice a day) 
B/L , b/l, b.l. pl , Bs/L, bs/l, bs.l 
  abbrev. for bill of lading 

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