Definitions of D
  1. noun
    the 4th letter of the Roman alphabet
    synonyms: d
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    type of:
    alphabetic character, letter, letter of the alphabet
    the conventional characters of the alphabet used to represent speech
  2. noun
    a fat-soluble vitamin that prevents rickets
    synonyms: calciferol, cholecalciferol, ergocalciferol, viosterol, vitamin D
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    type of:
    fat-soluble vitamin
    any vitamin that is soluble in fats
  3. noun
    the cardinal number that is the product of one hundred and five
    synonyms: 500, five hundred
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    type of:
    large integer
    an integer equal to or greater than ten
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