atomic mass unit

Medical Dictionary

atomic mass unit n.
Abbr. amu
A unit of mass equal to 1/12 the mass of an atom of carbon 12, which is assigned a mass of 12. Also called dalton.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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