ˌsistə̇ˈmad.]iks, -at], ]ēks\ noun plural but singular in construction
1. : the science of classification : classificatory method : organization
his genius was not for systematics but for penetrating fragments — Maurice Natanson
2. : a system of classification ; usually : the classification and study of organisms with regard to their natural relationships : taxonomy — compare biosystematy
3. : an organizational scheme or structure : form , hierarchy , plan
a highly theoretical assumption about the systematics of a culture — Abraham Edel