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trisubstituted

American  
[trahy-suhb-sti-too-tid, -tyoo-] / traɪˈsʌb stɪˌtu tɪd, -ˌtyu- /

adjective

Chemistry.
  1. pertaining to a molecule containing three substituents.


Etymology

Origin of trisubstituted

First recorded in 1895–1900; tri- + substitute + -ed 2