heteromorphic

from The Collaborative International Dictionary of English v.0.48
Heteromorphic \Het`er*o*mor"phic\, a. [Hetero- + Gr. morfh`
   form.] (Biol.)
   Deviating from the normal, perfect, or mature form; having
   different forms at different stages of existence, or in
   different individuals of the same species; -- applied
   especially to insects in which there is a wide difference of
   form between the larva and the adult, and to plants having
   more than one form of flower. Heteromorphism
    

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