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ne·o·morph, neomorphism (nē'ō-mōrf, nē'ō-mōr'fizm),
A new formation; a structure found in higher organisms, only slight or no traces of which exist in lower orders.
[neo- + G. morphē, form]
neomorph(nē′ō-morf) [″ + morphe, form]
A new formation or development that is not inherited from a similar structure in an ancestor.