Main definitions of B in English

: B1B2


(also b)


  • 1The second letter of the alphabet.

    1. 1.1The second highest class of academic mark.
    2. 1.2Denoting the second-highest-earning socioeconomic category for marketing purposes, including intermediate management and professional personnel.
    3. 1.3Chess Denoting the second file from the left, as viewed from White's side of the board.
    4. 1.4The second constant to appear in an algebraic equation.
    5. 1.5Geology Denoting a soil horizon of intermediate depth, typically the subsoil.
    6. 1.6The human blood type (in the ABO system) containing the B antigen and lacking the A.
  • 2Music
    The seventh note of the diatonic scale of C major.

    1. 2.1A key based on a scale with B as its keynote.

Main definitions of B in English

: B1B2


  • 1(used in recording moves in chess) bishop.

  • 2Black (used in describing grades of pencil lead)

    ‘2HB pencils’
  • 3US (in personal ads) black.

  • 4Bomber (in designations of US aircraft types)

    ‘a B52’

  • 1The chemical element boron.

  • 2Physics
    Magnetic flux density.

Main definitions of B in English

: B1B2


  • 1Physics

  • 2Born (used to indicate a date of birth)

    ‘George Lloyd (b. 1913)’
  • 3Billion.

  • 4Bass.

  • 5Basso.