Pronunciation: (het"ur-u-jē'nē-us, -jēn'yus),[key] —adj. 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.