1

ounce

noun \ ˈau̇n(t)s \

Definition of ounce

1 a : 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

Origin and Etymology of ounce

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

Other Weights and Measures Terms


2

ounce

noun

Definition of ounce

Origin and Etymology of ounce

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



OUNCE Defined for Kids

ounce

noun \ ˈau̇ns \

Definition of ounce for Students

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)

Medical Dictionary

ounce

noun \ ˈau̇n(t)s \

medical Definition of ounce

1 a : 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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