Home › Words › M › macromutationistmacromutationistmacromutationist means one who adopts the theory of macromutationism.Among words judged in Lexicurio's Arena, macromutationist ranks #33,910 of 42,749 for Qualifying.EtymologyFrom macromutation + -ist.nounOne who adopts the theory of macromutationism.Definitions & examples from Wiktionary (CC BY-SA 3.0).