Thesaurus: heterologous

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1. a. Characterized by heterology; consisting of different elements, or of like elements in different proportions; different; -- opposed to homologous; as, heterologous organs.
2. adj. not corresponding in structure or evolutionary origin
3. adj. derived from organisms of a different but related species
4. Characterized by heterology; consisting of different elements, or of like elements in different proportions; different; -- opposed to homologous; as, heterologous organs. Heterologous stimulus. (Physiol.) See under Stimulus. -- Heterologous tumor (Med.), a tumor differing in structure from the normal tissues of the body.
5. Characterized by heterology; consisting of different elements,or of like elements in different proportions; different; -- opposedto homologous; as, heterologous organs. Heterologous stimulus.(Physiol.) See under Stimulus.-- Heterologous tumor (Med.), a tumor differing in structure fromthe normal tissues of the body.
6. a not corresponding in structure or evolutionary origin a derived from organisms of a different but related species