| a measure of capacity equal to 1/16 pint or 1.8047 cubic inches (29.573 milliliters) in the U.S., and equal to 1/20 of an imperial pint, or 1.7339 cubic inches (28.413 milliliters) in Great Britain. Abbreviation: fl. oz; Symbol: f |

| fluid ounce n. Abbr. fl. oz.
|
fluid ounce or fluidounce
n.
Abbr. fl oz, fl. oz.
A unit of volume or capacity equal to 8 fluid drams or 29.57 milliliters.