fluid ounce

American  

noun

1. a measure of capacity equal to 1/16 (0.0625) pint (29.6 milliliters) in the U.S., and equal to 1/20 (0.05) of an imperial pint (28.4 milliliters) in Great Britain. fl. oz; f

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fluid ounce British  

noun

1. a unit of capacity equal to the volume of one avoirdupois ounce of distilled water at 62°F: there are twenty fluid ounces in an Imperial pint and sixteen in a US pint

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fluid ounce Scientific  

1. A unit of liquid volume or capacity in the US Customary System equal to 1/16 of a pint (29.57 milliliters).

2. See Table at measurement

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Usage

What does fluid ounce mean? A fluid ounce is a unit used in the measurement of the volume of liquids.It is commonly abbreviated as fl. oz. (or fl oz), which can mean a singular fluid ounce, or, more commonly, the plural fluid ounces.An ounce is a unit used in the measurement of weight. (Both ounce and ounces can be abbreviated as oz.) A fluid ounce is used to measure volume (capacity), not weight—specifically, the volume of a fluid (liquid). In everyday conversation, the word ounces is often used instead of saying fluid ounces, as in I just drank 16 ounces of that energy drink. The abbreviation oz. is sometimes used in this way, as in a 20 oz. bottle of water. You’ll often see the abbreviation fl. oz. on the labels of containers that contain liquid or some other kind of non-solid, such as a can of soda or a bottle of moisturizer, to indicate how much stuff the container contains. It is also seen in recipes.Fluid ounces are used in the United States Customary System and the British Imperial System of measurement.In the Customary System, there are 8 fluid ounces in a cup and 16 fluid ounces in a pint. There are 20 fluid ounces in an Imperial pint.A fluid ounce is equal to 29.57 milliliters (1 milliliter is equivalent to 0.033815 of a fluid ounce.)Example: Standard soft drink cans contain 12 fluid ounces, but they also sell 8 oz. cans.

Etymology

Origin of fluid ounce

First recorded in 1880–85

Example Sentences

Whole milk costs 3 to 5 cents per fluid ounce, while half-and-half costs between 9 and 19 cents and heavy cream 17 to 32 cents an ounce, according to the lawsuit.

From Los Angeles Times • Mar. 20, 2024

Professor Charles F. Chandler of Columbia College has examined a variety of these preparations and, in each fluid ounce of many popular articles, finds lead.”

From Scientific American • Mar. 5, 2022

Each is just half a fluid ounce, around the size of the small chapstick-size tube of Vaseline from the drugstore.

From Slate • Feb. 9, 2019

The Archdiocese of Santa Fe threw its support Wednesday behind a soda tax of 2 cents per fluid ounce that would go toward expanding prekindergarten programs.

From Washington Times • Apr. 20, 2017

Recipe for Turkish Lotion: To one fluid ounce of tincture of gum benzoin add seven fluid ounces of distilled rose-water and one-half ounce of glycerine.

From The Ladies Book of Useful Information Compiled from many sources by Anonymous