polytypic /pɒlɪˈtɪpɪk/ adjective6 •having several different taxa of the next lower rank, especially having several subspecies •of a habitat, not dominated by a single species •of a cell sample, containing several cell types •of an antibody response, involving several antibodies •of a substance, able to exist in more than one crystal structure, these differing in one dimension •exhibiting polytypism formsmore polytypic · most polytypic