fluid ounce Syllabification: (flu·id ounce) (abbreviation: fl. oz.)Translate fluid ounce | into French | into Italian Definition of fluid ounce noun 1a unit of capacity equal to one sixteenth of a US pint (approximately 0.03 liter). 2British a unit of capacity equal to one twentieth of a pint (approximately 0.028 liter). fluid ounce in other Oxford dictionaries Definition of fluid ounce in the British & World English dictionary
