ounce

¹ounce

noun \ˈau̇n(t)s\

Definition of OUNCE

1

a : a unit of weight equal to ¹⁄₁₂ troy pound — see weight table b : a unit of weight equal to ¹⁄₁₆ avoirdupois pound c : a small amount <an ounce of sense>

2

: fluid ounce

Origin of OUNCE

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

First Known Use: 14th century

Other Weights and Measures Terms

avoirdupois weight, calorie, denier, kip, pace, twain