A unit of liquid volume is the U.S. system of liquid measure and the British Imperial system. In the U.S. system, the fluidounce is often simply called the "ounce," and is equal to 1/16 of a U.S. pint. In the Imperial system, it is equal to 1/20 of an Imperial pint. This is summarized in the table below.
Imperial System, Pint, United States System of Liquid and Dry Measures
References
Woolf, H. B. (Ed. in Chief). Webster's New Collegiate Dictionary. Springfield, MA: Merriam, p. 1329, 1980.
