b

abbreviation

Physics.

bar; bars.
barn; barns.

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gato/gata

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Definition for b (2 of 7)

B¹

or b

[ bee ]

/ bi /

noun, plural B's or Bs, b's or bs.

the second letter of the English alphabet, a consonant.

any spoken sound represented by the letter B or b, as in bid, bauble, or daubed.

something having the shape of a B.

a written or printed representation of the letter B or b.

a device, as a printer's type, for reproducing the letter B or b.

Definition for b (3 of 7)

B²

abbreviation

Chess. bishop.

Black¹. Also b

Photography. bulb (def. 8).

Definition for b (4 of 7)

B³

Symbol.

the second in order or in a series.

(sometimes lowercase) (in some grading systems) a grade or mark, as in school or college, indicating the quality of a student's work as good or better than average.

(sometimes lowercase) (in some school systems) a symbol designating the second semester of a school year.

Physiology. a major blood group usually enabling a person whose blood is of this type to donate blood to persons of type B or AB and to receive blood from persons of type O or B.Compare ABO system.

Music.

the seventh tone in the scale of C major or the second tone in the relative minor scale, A minor.
a string, key, or pipe tuned to this tone.
a written or printed note representing this tone.
(in the fixed system of solmization) the seventh tone of the scale of C major, called ti.
the tonality having B as the tonic note.

(sometimes lowercase) the medieval Roman numeral for 300.

Chemistry. boron.

a proportional shoe width size, narrower than C and wider than A.

a proportional brassiere cup size, smaller than C and larger than A.

Physics. magnetic induction.

Electricity. susceptance.

a designation for a motion picture made on a low budget and meant as the secondary part of a double feature.

a quality rating for a corporate or municipal bond, lower than BB and higher than CCC.

Definition for b (5 of 7)

B-

U.S. Military.

(in designations of aircraft) bomber: B-29.

Definition for b (6 of 7)

bachelor.

bale.

Baseball. base; baseman.

bass.

basso.

bay.

billion.

blend of; blended.

book.

born.

breadth.

brother.

brotherhood.

Definition for b (7 of 7)

bachelor.

bacillus.

Baseball. base; baseman.

bass.

basso.

bay.

Bible.

bolivar.

boliviano.

book.

born.

breadth.

British.

brother.

brotherhood.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for b (1 of 6)

B

/ (biː) /

noun plural b's, B's or Bs

the second letter and first consonant of the modern English alphabet

a speech sound represented by this letter, usually a voiced bilabial stop, as in bell

Also: beta the second in a series, esp the second highest grade in an examination

British Dictionary definitions for b (2 of 6)

symbol for

chess See algebraic notation

British Dictionary definitions for b (3 of 6)

symbol for

music

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
a key, string, or pipe producing this note
the major or minor key having this note as its tonic

the supporting or less important of two thingsthe B side of a record

a human blood type of the ABO group, containing the B antigen

(in Britain) a secondary road

the number 11 in hexadecimal notation

chem boron

magnetic flux density

chess bishop

(on Brit pencils, signifying degree of softness of lead) blackB; 2B; 3B Compare H (def. 5)

Also: b physics bel

physics baryon number

balboa

belga

bolivar

photog B-setting

a person whose job is in middle management, or who holds an intermediate administrative or professional position
(as modifier)a B worker See also occupation groupings

abbreviation for

Belgium (international car registration)

British Dictionary definitions for b (4 of 6)

B-

abbreviation for (of US military aircraft)

bomberB-52

British Dictionary definitions for b (5 of 6)

abbreviation for

born

cricket bowled

British Dictionary definitions for b (6 of 6)

abbreviation for

(on maps, etc) bay

British

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for b (1 of 2)

abbr.

blood (used as a subscript)

Medical definitions for b (2 of 2)

The symbol for the elementboron

Scientific definitions for b

The symbol for boron.

The symbol for magnetic field.

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b

abbreviation

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Definition for b (2 of 7)

or b

noun, plural B's or Bs, b's or bs.

Definition for b (3 of 7)

abbreviation

Definition for b (4 of 7)

Symbol.

Definition for b (5 of 7)

U.S. Military.

Definition for b (6 of 7)

Definition for b (7 of 7)

British Dictionary definitions for b (1 of 6)

B

noun plural b's, B's or Bs

British Dictionary definitions for b (2 of 6)

symbol for

British Dictionary definitions for b (3 of 6)

symbol for

abbreviation for

British Dictionary definitions for b (4 of 6)

abbreviation for (of US military aircraft)

British Dictionary definitions for b (5 of 6)

abbreviation for

British Dictionary definitions for b (6 of 6)

abbreviation for

Medical definitions for b (1 of 2)

abbr.

Medical definitions for b (2 of 2)

Scientific definitions for b