Countable Nouns Starting with TRI and Containing O

Explore 159 verified English countable nouns starting with TRI and containing O, including Trillion, Trio, Trilogy, Tripod, Triathlon, Tribulation and Triangulation. Browse these count nouns with singular and plural forms below, or review singular and plural count rules in our noun grammar guide.

Refine list...
JUMP:
Sort:
Group:
Case:
View:
JUMP TO:
Select any word to view available definitions & photosSelect any word for details
Starts with TRIA11 words
triathlon
triangulation
trialogue
triazole
triaxon
triaconter
triakisoctahedron
triakistetrahedron
triactor
triakisicosahedron
triakisoctahedrid
Starts with TRIB7 words
tribulation
tribeswoman
tribesperson
tribologist
tribometer
tribromoacetaldehyde
tribophosphoroscope
Starts with TRIC24 words
triceratops
tricolor
trichotomy
tricot
trichome
tricorn
tricorne
trichomonas
trichloride
trichrome
trichologist
trichromat
trichomonad
trichloroethane
trichothecene
trichord
trichophyton
tricoteuse
trichoepithelioma
tricolette
trichosanthes
trichlorophenol
trichostrongylus
trichocyst
Starts with TRID
1 words
tridominium
Starts with TRIE
1 words
triethiodide
Starts with TRIF8 words
trifold
trifocals
trifocal
triforium
trifolium
trifurcation
trifluoperazine
trifluorochloromethane
Starts with TRIG7 words
trigon
trigone
triglot
trigo
trigonometer
trigonometrician
trigonododecahedron
Starts with TRIH3 words
trihalomethane
trihedron
trihemitetartemorion
Starts with TRII
1 words
triiodothyronine
Starts with TRIL10 words
trillion
trilogy
trillionth
trilobite
trillionaire
trilogue
trilateration
trilithon
trillo
trilobe
Starts with TRIM7 words
trimotor
trimonthly
trimpot
trimox
trimphone
trimetrogon
trimorph
Starts with TRIN8 words
trinomial
trinocular
trinucleotide
triniscope
trinitrobenzene
trinitrocresol
trinomialist
trinitrophenylmethylnitramine
Starts with TRIO11 words
trio
triode
trioxide
triolet
triol
triose
trionyx
trionymal
trionym
trionychid
trionychoideachid
Starts with TRIP18 words
tripod
triphosphate
triploid
triploidy
tripos
tripartition
triphthong
tripolitan
tripehound
triphone
tripodfish
tripersonality
triptote
tripudiation
tripleurospermum
tripody
triphosphopyridine
tripersonalist
Starts with TRIS10 words
trisomy
triskaidekaphobia
trisector
trisagion
trisection
triskelion
trisomic
triskaidekaphobe
trisome
trisoctahedron
Starts with TRIT14 words
triton
tritone
trituration
triterpenoid
tritagonist
tritiation
tritanope
tritoma
tritonia
triturator
trithiocarbonate
tritocerebrum
trithionate
tritetartemorion
Starts with TRIV
1 words
trivialization
Starts with TRIZ
1 words
trizone

•Browse Countable Nouns by Letter (A to Z)

Select a starting letter to browse countable nouns
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
Word Games & Solvers
Word FinderScrabble Word FinderWords With Friends CheatWordle SolverAnagram Solver
Dictionary & Reference
DictionarySynonymsAntonymsWordsVocabulary HubPositive WordsNegative Words
Community
Contact UsEditorial PolicyPrivacy PolicyTerms and Conditions
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.