What is "polytypic"

a. 1 (context taxonomy English) having several different taxa of the next lower rank, especially having several subspecies 2 (context conservation biology English) of a habitat, not dominated by a single species 3 (context material science English) of a substance, able to exist in more than one crystal structure, these differing in one dimension 4 (context microbiology English) of a cell sample, containing several cell types 5 (context immunology English) of an antibody response, involving several antibodies 6 exhibiting polytypism

Polytypic means of more than one type. It often refers to:

• Polytypic function, in computer science
• Polytypic habitat, in ecology, a habitat not dominated by a single species
• Polytypic taxon, in biology, a taxon with more than one immediately subordinate taxa