Definition of Heterachrony

Definition of Heterachrony

{ Het`er*och"ro*nism (?), Het`er*och"ro*ny (?), } n. [Gr. &?; of different times; &?; other + &?; time.] (Biol.) In evolution, a deviation from the typical sequence in the formation of organs or parts.

- Webster's Unabridged Dictionary (1913)

(biology) the variation in ontogeny of individuals of a species that gives rise to evolution

- The Nuttall Encyclopedia

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