usan
Medical Dictionary

USAN abbr.
United States Adopted Names (used for nonproprietary names of drugs adopted by a committee of medical professionals and drug manufacturers)

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Abbreviations & Acronyms
USAN
United States Adopted Name
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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00:10
Usan is always a great word to know.
So is zedonk. Does it mean:
the offspring of a zebra and a donkey.
a chattering or flighty, light-headed person.
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