ounce

noun (1)
\ˈau̇n(t)s \

Definition of ounce 

(Entry 1 of 2)

1a : a unit of weight equal to ¹/₁₂ troy pound — see Weights and Measures Table

b : a unit of weight equal to ¹/₁₆ avoirdupois pound

c : a small amount an ounce of sense

ounce

noun (2)

Definition of ounce (Entry 2 of 2)

First Known Use of ounce

Noun (1)

14th century, in the meaning defined at sense 1a

Noun (2)

1774, in the meaning defined above

History and Etymology for ounce

Noun (1)

Middle English, from Anglo-French unce, from Latin uncia 12th part, ounce, from unus one — more at one

Noun (2)

Middle English unce lynx, from Middle French, alteration (by misdivision, as if l'once the ounce) of lonce, probably from Old Italian lonza, from Middle Greek lynk-, lynx, from Greek

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Dictionary Entries near ounce

oul

Ouled Naïl

Oulu

ounce

ounce metal

ouph

our

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Time Traveler for ounce

The first known use of ounce was in the 14th century

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More Definitions for ounce

ounce

noun
\ˈau̇ns \

Kids Definition of ounce

1 : a unit of weight equal to ¹/₁₆ pound (about 28 grams)

2 : a unit of liquid capacity equal to ¹/₁₆ pint (about 30 milliliters)

ounce

noun
\ˈau̇n(t)s \

Medical Definition of ounce 

1a : a unit of troy weight equal to ¹/₁₂ troy pound or 31.103 grams

b : a unit of avoirdupois weight equal to ¹/₁₆ avoirdupois pound or 28.350 grams

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More from Merriam-Webster on ounce

Rhyming Dictionary: Words that rhyme with ounce

Thesaurus: All synonyms and antonyms for ounce

Spanish Central: Translation of ounce

Nglish: Translation of ounce for Spanish Speakers

Britannica English: Translation of ounce for Arabic Speakers

Britannica.com: Encyclopedia article about ounce

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