nounplural noun Hs, plural noun H's/ˈāCHiz/

• 1The eighth letter of the alphabet.

  1. 1.1Denoting the next after G in a set of items, categories, etc.
  2. 1.2hChess Denoting the file on the right-hand edge of the board, as viewed from White's side.
• 2HA shape like that of a capital H.

  More example sentences

  • ‘a widened H-strap for lateral support’
• 3HMusic
  (in the German system) the note B natural.

abbreviation

• 1Hard (used in describing grades of pencil lead)

  More example sentences

  • ‘a 2H pencil’
• 2Height (in giving the dimensions of an object)

  More example sentences

  • ‘H 195 cm by W 107 cm by D 52 cm’
• 3Physics
  Henry(s).

• 4 informal Heroin.

  More example sentences

  • ‘“Tell me it's not heroin.” “It's not H”’

• 1Chemistry
  Enthalpy.

• 2The chemical element hydrogen.

• 3Physics
  Magnetic field strength.

abbreviation

• 1(in measuring the height of horses) hand(s)

  More example sentences

  • ‘pinto pony gelding—quiet, 13.3 h, great with kids’
• 2in combination (in units of measurement) hecto-

  More example sentences

  • ‘wine production reached 624,000 hl last year’
• 3Horse.

• 4(especially with reference to water) hot.

  More example sentences

  • ‘nine rooms, all with h & c’
• 5Hour(s)

  More example sentences

  • ‘breakfast at 0700 h’

• Planck's constant.