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heterology

American  
[het-uh-rol-uh-jee] / ˌhɛt əˈrɒl ə dʒi /

noun

  1. Biology. the lack of correspondence of apparently similar organic structures as the result of unlike origins of constituent parts.

  2. Pathology. abnormality; structural difference from a type or normal standard.


Etymology

Origin of heterology

First recorded in 1850–55; hetero- + -logy

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