What is the meaning of Fluid_ounce?

Any of various units of volume used for liquid measure, all approximately 1.73–1.83 cubic inches or 28.4–30 milliliters.

  1. A unit of volume equal to one sixteenth of a US pint or approximately 29.6 ml
  2. A unit of volume equal to one twentieth of an imperial pint or approximately 28.4 ml

A unit of volume equal to one sixteenth of a US pint or approximately 29.6 ml

A unit of volume equal to one twentieth of an imperial pint or approximately 28.4 ml

Source: wiktionary.org