systematics
sys tem at ics |ˌsistəˈmatiks ˌsɪstəˈmædɪks | ▶plural noun [ treated as sing. ] the branch of biology that deals with classification and nomenclature; taxonomy.
sys ¦tem |at ¦ics |sɪstəˈmatɪks | ▶plural noun [ treated as sing. ] the branch of biology that deals with classification and nomenclature; taxonomy.