B meaning

UK US /bi/ 1 syllable

B (noun): aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil.

B has 7 meanings in this dictionary.

B as a noun

  1. aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil

    Synonyms: bacillus

    Type of: eubacteria

    Kinds: Bacillus anthracis, Bacillus subtilis, Yersinia pestis

  2. originally thought to be a single vitamin but now separated into several B vitamins

    Synonyms: B-complex vitamin, B complex, vitamin B complex, vitamin B, B vitamin

    Type of: water-soluble vitamin

    Kinds: choline, inositol, pantothenic acid, vitamin B1, vitamin B12, vitamin B2, vitamin B6, vitamin Bc, niacin, biotin

  3. a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder

    Synonyms: boron, atomic number 5

    Type of: chemical element

  4. a logarithmic unit of sound intensity equal to 10 decibels

    Synonyms: Bel

    Type of: sound unit

  5. (physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter

    Synonyms: barn

    Type of: area unit

  6. the 2nd letter of the Roman alphabet

    Type of: letter

  7. the blood group whose red cells carry the B antigen

    Synonyms: type B, group B

    Type of: blood group

How to pronounce B

B is pronounced /bi/ in American English. It has 1 syllable.

Words that rhyme with B

More about B on Wikipedia.