\ ˈau̇n(t)s
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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
2
: fluid ounce
ounce
noun (2)Definition of ounce (Entry 2 of 2)
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From the Editors at Merriam-Webster
7 Words Based on Units of Measure
7 Words Based on Units of Measure
Words from the language of precision.
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Cite this Entry
“Ounce.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ounce. Accessed 23 Jul. 2021.
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More Definitions for ounce
ounce
noun
\ ˈau̇ns
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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
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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
2
: fluid ounce
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Time Traveler for ounce
The first known use of ounce was in the 14th century
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