English Reference
Noun

fluid ounce

n. countable
B2 Upper Intermediate

n.a small unit for measuring liquids, mostly used in the US. There are about 30 milliliters in one fluid ounce.

n.a unit of liquid capacity equal to one-sixteenth of a US pint or one-twentieth of an imperial pint. Often abbreviated as 'fl oz'.


SIMPLE

The bottle contains eight fluid ounces of juice.

CONTEXTUAL

The recipe calls for four fluid ounces of milk, which is roughly half a cup in US cooking measurements.

COMPLEX

Standardization of product labeling requires manufacturers to list both fluid ounces and milliliters to ensure the volume is understood by consumers using different systems of measurement.

Usage

Typically abbreviated as 'fl. oz.' in both American and British English; note that the US and imperial volumes differ slightly.

This entry
Level B2 · Upper Intermediate
Updated