The Collaborative International Dictionary of English v.0.48:
Fluidounce \Flu"id*ounce`\, n. See Fluid ounce, under Fluid. [1913 Webster]WordNet (r) 3.0 (2006):
fluidounce n 1: 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) [syn: fluidounce, fluid ounce] 2: a United States unit of capacity or volume equal to 1.804 cubic inches [syn: fluidounce, fluid ounce]