fluid ounce 
(abbreviation fl. oz)
noun
1British A unit of capacity equal to one twentieth of a pint (approximately 0.028 litre).The beauty of this scale is that not only can you switch between kilograms and pounds, it also copes with measuring liquids in fluid ounces or millilitres....
- How anyone dreamed up a system where 20 fluid ounces makes one pint, 437.5 grains makes one ounce and 1,760 yards makes one mile is beyond us.
- A canteen cup from those days (I have one) holds about 16 fluid ounces, roughly 500 milliliters.
2 (also fluidounce) US A unit of capacity equal to one sixteenth of a US pint (approximately 0.03 litre).The lowest recommended use rate is now 40 fluid ounces / acre....
- The flush is done by over-filling the system with a solution of 10 fluid ounces of 5 percent chlorine per 40 gal of water.
- The average person can satisfy fluid needs by drinking pint of water about 2 hours before exercising and continuing to drink 4 to 8 fluid ounces every 20 minutes or so during exercise.
