Pronunciation: (ī"su-môr'fus), [key]
—adj. Chem., Crystall.
(of a compound or mineral) capable of crystallizing in a form similar to that of another compound or mineral, used esp. of substances so closely related that they form end members of a series of solid solutions.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.