Of foreign origin. Commonly confused with heterogeneous.
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het·er·og·e·nous .het-ə-'räj-ə-nəs adj
1) originating in an outside source esp derived from another species <\heterogenous bone grafts>
2) HETEROGENEOUS
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het·er·og·e·nous (het″ər-ojґə-nəs) 1. xenogeneic. 2. heterogeneous.Medical dictionary. 2011.