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

The tube is filled with 1 fluid ounce of cream and is capped with a small pump to get the perfect amount of serum—without losing or wasting any precious product. —Gabriela Izquierdo, Southern Living, 24 Nov. 2025

Three for $3 Spam singles assorted varieties in a 2.5 ounce can. $2.50 Clover Valley tortilla chips, cheese puffs and other varieties in an eight to 13 ounce bag. $3.75 with digital coupon Dasani 24 pack of water in 16.9 fluid ounce bottles. —Craig Shoup, Nashville Tennessean, 7 Nov. 2025

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

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