Comprising elements with various and dissimilar properties.
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het·ero·ge·neous .het-ə-rə-'jē-nē-əs, .he-trə-, -nyəs adj not uniform in structure or composition <tumors which have a \heterogeneous composition by reason of structure and presence of necrosis (Yr. Bk. of Endocrinology)>
het·ero·ge·neous·ly adv
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het·ero·ge·ne·ous (het″ər-o-jeґne-əs) [hetero- + Gr. genos kind] 1. consisting of or composed of dissimilar elements or ingredients; not having a uniform quality throughout. 2. in genetics, pertaining to a phenotype that can be produced by different mutations.Medical dictionary. 2011.