from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A system of weights used in pharmacy and based on an ounce equal to 480 grains and a pound equal to 12 ounces. It has been largely replaced by measures of the metric system.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun any weight unit used in pharmacy; an ounce is equal to 480 grains and a pound is equal to 12 ounces
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