Tris
//tɹɪs// name, noun
name, noun ·Uncommon ·Advanced level
Definitions
Noun
- 1 A flammable compound which forms a corrosive solution in water and is used as a buffer and emulsifying agent. uncountable
- 2 A phosphoric acid ester C₉H₁₅Br₆O₄P formerly used to flameproof clothes and especially children's nightclothes until it was found to cause cancer in animals. uncountable
- 3 plural of tri form-of, plural
- 4 plural of TRI form-of, plural
Proper Noun
- 1 Acronym of Transportation Research Information Services. US, abbreviation, acronym, alt-of
- 2 A diminutive of the male given name Tristram or Tristan.
- 3 A diminutive of the female given name Patricia or Beatrice.
"“This is Tris Prior. Her brother, Caleb. And their friend Susan Black.” “Prior,” she says. “I know of several Priors, but none of them are named Tris. Beatrice, however...""
- 4 plural of Tri form-of, plural
Synonyms
All synonymsExample
More examples"“This is Tris Prior. Her brother, Caleb. And their friend Susan Black.” “Prior,” she says. “I know of several Priors, but none of them are named Tris. Beatrice, however...""
Etymology
Etymology 1
Abbreviation of tris(hydroxymethyl)aminomethane.
Etymology 2
Abbreviation of tris(2,3-dibromopropyl)phosphate.
Etymology 3
From tri + -s.
Etymology 4
Shortened from Tristram or Tristan.
Etymology 5
From Patricia and Beatrice.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.