noun · 11 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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/aʊns/
rhymes with -aʊns
UK:Recorded audio is listed in the source snapshot.
CMU ARPABET:AW1 N S
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
An avoirdupois ounce, weighing 1⁄16 of an avoirdupois pound, or 28.349523125 grams.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
A troy ounce, weighing 1⁄12 of a troy pound, or 480 grains, or 31.1034768 grams.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
A US fluid ounce, with a volume of 1⁄16 of a US pint, 1.804688 cubic inches or 29.5735295625 millilitres.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
noun
Meaning 4
A British imperial fluid ounce, with a volume of 1⁄20 of an imperial pint, 1.733871 cubic inches or 28.4130625 millilitres.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
5
noun
Meaning 5
Any small amount, a little bit.
Definition source: English Wiktionary via Wiktextract
Usage: figuratively
Examples
He didn't feel even an ounce of regret for his actions.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
6
noun
Meaning 6
A large wild feline, such as a lynx or cougar.
Definition source: English Wiktionary via Wiktextract
Usage: archaic
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
7
noun
Meaning 7
Synonym of snow leopard, Panthera uncia.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: snow leopard, Panthera uncia
Antonyms: none provided
8
noun
Meaning 8
Synonym of onza, a particularly aggressive cougar or jaguarundi in Mexican folklore.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: onza
Antonyms: none provided
9
noun
Meaning 9
large feline of upland central Asia having long thick whitish fur
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: snow leopard, Panthera uncia
Antonyms: none provided
Broader terms: big cat, cat
10
noun
Meaning 10
a unit of weight equal to one sixteenth of a pound or 16 drams or 28.349 grams
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: oz.
Antonyms: none provided
Broader terms: avoirdupois unit
11
noun
Meaning 11
a unit of apothecary weight equal to 480 grains or one twelfth of a pound
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: troy ounce, apothecaries' ounce
Antonyms: none provided
Broader terms: troy unit, apothecaries' unit, apothecaries' weight
History
Etymology
From Middle English ounce, unce, from Middle French once, from Latin uncia (“Roman ounce, various similar units”), ultimately from Proto-Indo-European *óynos (“one”). Doublet of a, one, inch, uncia, onça, onza, oka, ouguiya, and awqiyyah.
From Middle French once, from Old French lonce (“lynx”), by false division (the l was thought to be the article), from Italian lonza, ultimately from Ancient Greek λύγξ (lúnx, “lynx”). Doublet of onza and lynx.
Across languages
Translations
81 source translations are retained for this English entry.