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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Well, without making this super complicated, 1 fluid ounce is roughly equal to 1 ounce. — Alyssa Grabinski, People.com, 19 May 2025 Each 12-fluid ounce can of Poppi Berries & Cream contains 35 calories, 5 grams of sugar, and 3 grams of fiber. — Kait Hanson, Southern Living, 5 Apr. 2026 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 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 See All Example Sentences for fluid ounce

Word History

First Known Use

1811, in the meaning defined at sense 1

Time Traveler
The first known use of fluid ounce was in 1811

Rhymes for fluid ounce

See All Rhymes for fluid ounce

Browse Nearby Words

fluidness
fluid ounce
fluid stress
See all Nearby Words

Cite this Entry

“Fluid ounce.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fluid%20ounce. Accessed 7 Jul. 2026.

Copy Citation

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

More from Merriam-Webster on fluid ounce

Nglish: Translation of fluid ounce for Spanish Speakers

Britannica.com: Encyclopedia article about fluid ounce

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Popular in Grammar & Usage

See More

Is that lie 'bald-faced' or 'bold-faced'?

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

Why is '-ed' sometimes pronounced at the end of a word?

Commonly Misspelled Words

How to Use Em Dashes (—), En Dashes (–) , and Hyphens (-)
See More

Popular in Wordplay

See More

14 Phobias You Probably Haven't Heard Of

The Longest Long Words List

One-Word Oxymorons: Bittersweet, Spendthrift, and More

Ten Words Ending with a Silent ‘T’

12 Lovely and Unusual Words for the Natural World
See More

Popular

See More

Is that lie 'bald-faced' or 'bold-faced'?

14 Phobias You Probably Haven't Heard Of

The Longest Long Words List
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
hangman letters and game
Hangman Lightning Round Figure out which word fits in the blanks.
See All