Monomorphic

{ Mon′o‐mor″phic (?), Mon′o‐mor″phous (?), } a. [Mono- + Gr. μορφή form.] (Biol.) Having but a single form; retaining the same form throughout the various stages of development; of the same or of an essentially similar type of structure; — opposed to dimorphic, trimorphic, and polymorphic.