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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formula weight in Medicine

formula weight

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