Noun has 2 senses

• fluid ounce(n = noun.quantity) fluidounce - a British imperial unit of capacity or volume (liquid or dry) equal to 8 fluid drams or 28.416 cubic centimeters (1.734 cubic inches);




• fluid ounce(n = noun.quantity) fluidounce - a United States unit of capacity or volume equal to 1.804 cubic inches;