- (of a molecule) molecular weight.
- (of an ionic compound that does not form molecules) the sum of the atomic weights of the atoms of the formula unit.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- molecular weight
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.