het·er·o·ge·ne·ous 
(hĕt′ər-ə-jēnē-əs, -jēnyəs)
(hĕt′ər-ə-jēnē-əs, -jēnyəs)adj.
1. also het·er·og·e·nous (hĕt′ə-rŏjə-nəs) Consisting of dissimilar elements or parts; not homogeneous. See Synonyms at miscellaneous.
2. Xenogeneic.
[From Medieval Latin heterogeneus, from Greek heterogenēs : hetero-, hetero- + genos, kind, race; see genə- in the Appendix of Indo-European roots.]
het′er·o·gene·ous·ly adv.
het′er·o·gene·ous·ness n.