fluid ounce

noun

1

: a U.S. unit of liquid capacity equal to ¹/₁₆ pint see Weights and Measures Table

2

: a British unit of liquid capacity equal to ¹/₂₀ pint see Weights and Measures Table

Examples of fluid ounce in a Sentence

Recent Examples on the Web

Diet Coke Lime would be sold individually in 20 fluid ounce plastic bottles, and in 12-packs of 12 fluid ounce cans, according to the website. —Rey Covarrubias Jr, AZCentral.com, 7 Oct. 2025

Welch received from Sanchez a case of 40 16.9 fluid ounce water bottles. —Jack Rodriquez-Vars august 9, Sacbee.com, 9 Aug. 2025

Key Facts The recall specifically applies to production lots of High Noon Beach Variety packs, which are 12-pack products containing 12 fluid ounce cans. —Antonio Pequeño Iv, Forbes.com, 30 July 2025

The recall affects 4 fluid ounce amber bottles of Little Remedies Honey Cough Syrup (UPC 7-56184-10737-9) sold in the U.S. between December 14, 2022, and June 4, 2025. —Annabelle Canela, Parents, 20 June 2025

Word History

First Known Use

1811, in the meaning defined at sense 1

Rhymes for fluid ounce

• announce
• denounce
• pronounce
• renounce
• bounce
• flounce
• pounce

Kids Definition

fluid ounce

noun

: a unit of liquid capacity equal to ¹⁄₁₆ pint (about 29.6 milliliters) see measure

Medical Definition

fluid ounce

noun

1

: a United States unit of liquid capacity equal to ¹/₁₆ pint

2

: a British unit of liquid capacity equal to ¹/₂₀ pint