that quantity of a substance whose weight in grams is numerically equal to the molecular weight of the substance.
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Compare Avogadro's number.
Origin of gram molecule
First recorded in 1890–95
Related formsgram-mo·lec·u·lar [gram-muh-lek-yuh-ler] /ˌgræm məˈlɛk yə lər/, gram-mo·lar [gram-moh-ler] /ˌgræmˈmoʊ lər/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for gram molecule
an amount of a compound equal to its molecular weight expressed in grams: now replaced by the moleSee mole 4
Derived Formsgram-molecular or gram-molar (ˌɡræmˈməʊlə), adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medicine definitions for gram molecule
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.