ounce
//aʊns//
Forms
- Plural
- ounces
Definitions
1.An avoirdupois ounce, weighing ¹⁄₁₆ of an avoirdupois pound, or 28.349523125 grams.
2.A troy ounce, weighing ¹⁄₁₂ of a troy pound, or 480 grains, or 31.1034768 grams.
3.A US fluid ounce, with a volume of ¹⁄₁₆ of a US pint, 1.804688 cubic inches or 29.5735295625 millilitres.
4.A British imperial fluid ounce, with a volume of ¹⁄₂₀ of an imperial pint, 1.733871 cubic inches or 28.4130625 millilitres.
Frequency
Overall
Uncommon· #3615
By learning goal
- Everyday conversation
- Rare
- General reading & writing
- Uncommon
- Academic
- Rare
- Literature
- Rare
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.