formula weight

formula weight

noun Chemistry.
1.
(of a molecule) molecular weight.
2.
(of an ionic compound that does not form molecules) the sum of the atomic weights of the atoms of the formula unit.
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Medical Dictionary

formula weight n.
See molecular weight.

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