The existence of multiple types, especially of multiple subspecies. / (of crystals) The existence of multiple forms differing in only one of the dimensions of the unit cell.

plural of polytypism

(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

plural of polytype

Any of the types involved in polytypism. / A cast, or facsimile copy, of an engraved block, matter in type, etc.

(transitive) To produce a polytype of.

present participle of polytype

simple past tense and past participle of polytype

polytypic