b

noun, often capitalized, often attributive

Save Word

\ ˈbē

plural b's or bs\ ˈbēz

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 5 sense 1) 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

abbreviation

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

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

Keep scrolling for more

Learn More about b

Dictionary Entries near b

Statistics for b

Cite this Entry

“B.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/b. Accessed 13 Apr. 2021.

Style: MLA

MLA

Chicago

APA

Merriam-Webster Check Mark Icon

Keep scrolling for more

More Definitions for 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

See the full definition for b in the English Language Learners Dictionary

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

abbreviation

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

noun

\ ˈbē

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

symbol

Medical Definition of B (Entry 3 of 3)

boron