tri-
Prefix meaning three
Tri- is a prefix meaning three.
It appears in words describing things with three parts or aspects: triangle, tricycle, trilogy, tripod, trilingual.
In chemistry, tri- indicates three atoms or groups: trioxide, trichloride.
Ordered top-three wager
- triathlonThree-event endurance contest
- tricepsThree-headed arm muscle
- triceratopsThree-horned prehistoric reptile
- trilingualSpeaking three languages
trisect · trinomial · triptych · triumvirate · trireme · trigonometry · trivalent · trilobite
Joining multiple elements
- compoundCombined into one
- GreekOf Athenian origin
- LatinAncient Roman language
- etymologyWord origin study
morpheme · word-formation · scientific · nomenclature · terminology · mathematics · chemistry · biology
trifecta
Ordered top-three wager
- triathlonThree-event endurance contest
- tricepsThree-headed arm muscle
- triceratopsThree-horned prehistoric reptile
trilingual · trisect · trinomial · triptych · triumvirate · trireme · trigonometry · trivalent · trilobite · trinket
combining
Joining multiple elements
etymology · morpheme · word-formation · scientific · nomenclature · terminology · mathematics · chemistry · biology · anatomy
- prefixespre-, anti, post-, contra, re-
- morphemesmorpheme, affix, prefix, suffix, infix
- chemical nameschemical name, common names, common name, preferred name, traditional name
- triple dog dareHighest level schoolyard provocation
- isosceles triangleThree-sided figure, two congruent
- love triangleThree-person romantic entanglement
- right triangleThree-sided, one perpendicular corner
- third trimesterFinal pregnancy phase
- first trimesterPregnancy's initial twelve weeks
triple, trio, triangle, tricycle, tripod, triad, triplets, triplet, triangles