See also: Appendix:Variations of "tri" English Proper noun TRI Initialism of Toxic Release Inventory. (artificial intelligence, US) Initialism of Toyota Research Institute. Noun TRI (plural TRIs) Initialism of Triple Reuptake Inhibitor. Anagrams IRT, RTI, TIR, Tir, ritWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads