Pronunciation: (het"ur-u-jē'nē-us, -jēn'yus), [key]
1. different in kind; unlike; incongruous.
2. composed of parts of different kinds; having widely dissimilar elements or constituents: The party was attended by a heterogeneous group of artists, politicians, and social climbers.
3. Chem.(of a mixture) composed of different substances or the same substance in different phases, as solid ice and liquid water.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.