fluid ounce

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fluid ounce

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

fluid ounce

[¦flü·əd ′au̇ns]
(mechanics)
Abbreviated fl oz.
A unit of volume that is used in the United States for measurement of liquid substances, equal to 1/16 liquid pint, or 231/128 cubic inches, or 2.95735295625 × 10-5 cubic meter.
A unit of volume used in the United Kingdom for measurement of liquid substances, and occasionally of solid substances, equal to 1/20 pint or 2.84130625 × 10-5 cubic meter.