(organic chemistry) A flammable compound which forms a corrosive solution in water and is used as a buffer and emulsifying agent.

(organic chemistry) A phosphoric acid ester C₉H₁₅Br₆O₄P formerly used to flameproof clothes and especially children's nightclothes until it was found to cause cancer in animals.

plural of tri

(chemistry, obsolete) A variant of tri- used to indicate that the component that does not take the prefix occurs three times in the compound: trisphosphuret of copper is PCu₃; trisbenzeneazoresorcinol, C₆H(OH)₂(N₂Ph)₃.

(US) Acronym of Transportation Research Information Services.

A diminutive of the male given name Tristram or Tristan.

A diminutive of the female given name Patricia or Beatrice.

plural of Tri

plural of TRI

(chiefly attributive) triathlon / (computer graphics) triangle / (bodybuilding, colloquial, uncommon) triceps