Noun
a United States unit of capacity or volume equal to 1.804 cubic inches
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)
Source: WordNet1 fluid ounce of water weighs approximately 1 ounce so a recipe calling for a UK pint (20 fl oz) of water can be substituted with 20 oz of water. Source: Internet
Consequently, a fluid ounce of water weighs about 1.041 ounces avoirdupois. Source: Internet
In licensed venues, draught beer and cider is sold in glasses and jugs with sizes based on the imperial fluid ounce though rounded to the nearest 5 ml. Source: Internet
The fluid ounce derives its name originally from being the volume of one ounce avoirdupois of water, but in the US it is defined as 1 128 of a US gallon. Source: Internet
Ammo Energy Shot contains 171.00 mgs of caffeine per fluid ounce (578.22mg/100 ml). Source: Internet
Blu Frog Energy Drink contains 9.46 mgs of caffeine per fluid ounce (31.98mg/100 ml). Source: Internet