Pronunciation Noun

ounce (plural ounces) abbreviation oz. or

  1. An avoirdupois ounce, weighing frac 16 of an avoirdupois pound, or 28.3495 grams.
  2. A troy ounce, weighing frac 12 of a troy pound, or 480 grains, or 31.1035 grams.
  3. A US fluid ounce, with a volume of frac 16 of a US pint, 1.8047 cubic inches or 29.5735 millilitres.
  4. A British imperial fluid ounce, with a volume of frac 20 of an imperial pint, 1.7339 cubic inches or 28.4131 millilitres.
  5. A little bit.
    He didn't feel even an ounce of regret for his actions.
Synonyms Related terms Translations Noun

ounce (plural ounces)

  1. (now, archaic) A large wild feline, such as a lynx or cougar. [from 14th c.]
    • 1634, William Wood, New Englands Prospect:
      The Ounce or the wilde Cat, is as big as a mungrell dog, this creature is by nature feirce, and more dangerous to bee met withall than any other creature, not fearing eyther dogge or man […].
    • 1801, Robert Southey, Thalaba the Destroyer:
      Halloa! another prey,
      The nimble Antelope!
      The ounce is freed; one spring,
      And his talons are sheath’d in her shoulders,
      And his teeth are red in her gore.
  2. Now specifically, the snow leopard, Uncia uncia. [from 18th c.]

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