There are 2 definitions of ounce in English:


Line breaks: ounce
Pronunciation: /aʊns


1 (abbreviation: oz) A unit of weight of one sixteenth of a pound avoirdupois (approximately 28 grams): melt three ounces of butter in a large frying pan
More example sentences
  • Most cohort members reported their offspring's birth weights in pounds and ounces.
  • For the cauliflower foam: Melt two and one-half ounces of the butter in a saucepan until foaming.
  • For the mushroom rillettes, in a medium saucepan, melt four ounces of butter over medium heat.
1.1A unit of one twelfth of a pound troy or apothecaries' measure, equal to 480 grains (approximately 31 grams).
More example sentences
  • I should say that troy ounces are a measure used only for precious metals.
  • That is an average grade of 2.35 troy ounces per ton!
  • Large masses of native gold - up to many hundreds of troy ounces - have been encountered during mining.
2A very small amount of something: Robyn summoned up every ounce of strength
More example sentences
  • The crew recites the dialogue by heart and mimics the actors without an ounce of embarrassment.
  • But if the commentor is right, it would be an even more ridiculous point to make - pure smear, without an ounce of journalistic content.
  • The tiny hotel, technically a ‘restaurant with rooms’ as it has only five of them, is a haven of oak-beamed loveliness without an ounce of tweeness to spoil it.
particle, scrap, bit, speck, iota, whit, jot, trace, atom, shred, crumb, fragment, grain, drop, spot, mite, tittle, jot or tittle, modicum; Irishstim
informal smidgen, smidge, tad
archaic scantling, scruple


Middle English: from Old French unce, from Latin uncia 'twelfth part (of a pound or foot)'; compare with inch1.

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