- Triregnum Noun
- Trireme Noun
- Triricinolein Noun
- Trisection Noun Adj
- Trisector Noun Adj
- Trisectrix Noun
- Trishaw Noun
- Trisilane Noun
- Trisilicate Noun
- Trisistor Noun
- Triskaidekaphobe Noun
- Triskaidekaphobia Noun
- Triskeles Noun
- Trismus Noun
- Trisoctahedron Noun
- Trisomy Noun Adj
- Tristan Noun
- Tristate Adj Noun
- Tristearin Noun
- Tristich Noun
- Tristimulus Adj Noun
- Tristocompatibility Noun
- Trisulfide Noun
- Trisyllable Noun
- Tritanomaly Noun
- Tritanopia Noun
- Triter Noun
- Tritetrahedron Noun
- Tritheism Noun
- Trithiane Noun
- Trithiocarbonate Noun
- Trithionate Noun
- Triticale Noun
- Tritium Noun
- Triton Noun
- Tritone Noun
- Triturability Noun
- Triturate Verb Noun
- Trituration Noun
- Triturator Noun
- Trityl Noun
- Triumph Noun Verb
- Triumphalism Noun
- Triumphalist Adj Noun
- Triumphator Noun
- Triumvir Noun
- Triumvirate Noun
- Triune Adj Noun
- Triunity Noun
- Trivalence Noun
- Trivalency Noun
- Trivalve Adj Noun
- Trivandrum Noun
- Trivector Noun
- Trivet Noun
- Trivia Noun Adj
- Trivialisation Noun
- Triviality Noun
- Trivializability Noun
- Trivialization Noun