fluid ounce

US /ˈfluː.ɪd ˈaʊns/
UK /ˈfluː.ɪd ˈaʊns/
"fluid ounce" picture
1.

oncia fluida

a unit of volume for liquid, equal to 1/20 of a pint in the UK (approximately 28.4 ml) and 1/16 of a pint in the US (approximately 29.6 ml)

:
The recipe calls for 8 fluid ounces of milk.
La ricetta richiede 8 once fluide di latte.
This bottle contains 16 fluid ounces of juice.
Questa bottiglia contiene 16 once fluide di succo.