trifunctional

[ trahy-fuhngk-shuh-nl ]
/ traɪˈfʌŋk ʃə nl /

adjective Chemistry.

pertaining to molecules that can react at three sites.

Origin of trifunctional

First recorded in 1925–30; tri- + functional
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019