ounce

ounce definition - medical

ounce (ouns)

noun Abbr. oz, oz.
  1. A unit of weight in the US Customary System, an avoirdupois unit equal to 437.5 grains or 28.35 grams.
  2. A unit of apothecary weight equal to 480 grains or 31.10 grams.
  3. A fluid ounce.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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