Dictionary
gram' at"om
Chem.
the quantity of an element whose weight in grams is numerically equal to the atomic weight of the element. Also called
gram'-a•tom'ic weight' Pronunciation: (gram'u-tom'ik, -tom"-). [key]Cf.
Avogadro's number.Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.