1. (

• fluidounce ,
• fluid_ounce ,

) a British imperial unit of capacity or volume (liquid or dry) equal to 8 fluid drams or 28.416 cubic centimeters (1.734 cubic inches) ;

2. (

• fluidounce ,
• fluid_ounce ,

) a United States unit of capacity or volume equal to 1.804 cubic inches ;