b

noun, often capitalized, often attributive
\ ˈbē How to pronounce b (audio) \
plural b's or bs\ ˈbēz How to pronounce bs (audio) \

Definition of b

 (Entry 1 of 3)

1a : the second letter of the English alphabet names that begin with b
b : a graphic representation of this letter in the shape of a b
c : the speech sound that the written letter b represents : a speech counterpart of orthographic b
2 : the seventh tone of a C-major scale (see scale entry 6 sense 2) in the key of b
3 : a graphic device for reproducing the letter b the b on the laptop's keyboard
4 : one designated b especially as the second in order or class I chose option b.
5a : a grade rating a student's work as good but short of excellent
b : one graded or rated with a B a b student
6 : something shaped like the letter B
7 capitalized : the one of the four ABO blood groups characterized by the presence of antigens designated by the letter B and by the presence of antibodies against the antigens present in the A blood group

Definition of b (Entry 2 of 3)

1 bachelor
2 bacillus
3 back
4 bag
5 bale
6 bass
7 basso
8 bat
9 Baumé
10 before
11 Bible
12 billion
13 bishop
14 black
15 blue
16 bolivar
17 book
18 born
19 bottom
20 brick
21 brightness
22 British
23 bulb
24 butut

B

symbol

Definition of B (Entry 3 of 3)

boron

Examples of b in a Sentence

Noun

There are two b's in the word “abbey.” All of their children's names begin with b. a song in the key of B got a B in math
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First Known Use of b

Noun

before the 12th century, in the meaning defined at sense 1a

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Dictionary Entries near b

azyme

Az-Zarqā'

Azzazame

b

B

b'hoy

Ba

Statistics for b

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Time Traveler for b

The first known use of b was before the 12th century

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More Definitions for b

b

noun

English Language Learners Definition of b

: the second letter of the English alphabet
: a musical note or key referred to by the letter B : the seventh tone of a C-major scale
: a grade that is given to a student for doing good work

b

noun, often capitalized
\ ˈbē\
plural b's or bs\ ˈbēz \

Kids Definition of b

1 : the second letter of the English alphabet
2 : a grade that shows a student's work is good
3 : a musical note referred to by the letter B

Medical Definition of b

 (Entry 1 of 3)

1 bacillus
2 barometric
3 bath
4 Baumé scale
5 behavior
6 bel
7 bicuspid
8 born
9 brother

B

noun
\ ˈbē How to pronounce B (audio) \

Medical Definition of B (Entry 2 of 3)

: the one of the four ABO blood groups characterized by the presence of antigens designated by the letter B and by the presence of antibodies against the antigens present in the A blood group

B

symbol

Medical Definition of B (Entry 3 of 3)

boron

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More from Merriam-Webster on b

Rhyming Dictionary: Words that rhyme with b

Spanish Central: Translation of b

Nglish: Translation of b for Spanish Speakers

Britannica English: Translation of b for Arabic Speakers

Comments on b

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