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anal·o·gous ə-'nal-ə-gəs adj having similar function but a different structure and origin <\analogous organs>
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adj.
describing organs or parts that have similar functions in different organisms although they do not have the same evolutionary origin or development. Compare homologous.
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anal·o·gous (ə-nalґə-gəs) [Gr. analogos according to a due ratio, conformable, proportionate] resembling or similar in some respects, as in function or appearance, but not in origin or development; cf. homologous (def. 1).Medical dictionary. 2011.