Adjective
(taxonomy) having several different taxa of the next lower rank, especially having several subspecies
(conservation biology) of a habitat, not dominated by a single species
(material science) of a substance, able to exist in more than one crystal structure, these differing in one dimension
(microbiology) of a cell sample, containing several cell types
(immunology) of an antibody response, involving several antibodies
exhibiting polytypism
Source: en.wiktionary.org