trimolecular

[ trahy-muh-lek-yuh-ler ]
/ ˌtraɪ məˈlɛk yə lər /

adjective Chemistry.

pertaining to or having three molecules.

Origin of trimolecular

British Dictionary definitions for trimolecular

trimolecular
/ (ˌtraɪməˈlɛkjʊlə) /

adjective

chem of, concerned with, formed from, or involving three molecules