Countable Nouns Starting with O and Containing TR

Explore 78 verified English countable nouns starting with O and containing TR, including Outrage, Orchestra, Outreach, Obstruction, Outro, Orchestration and Ostrich. Browse these count nouns with singular and plural forms below, or review singular and plural count rules in our noun grammar guide.

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Starts with OB10 words
obstruction
obstetrician
obstructionist
obtrusion
obstruent
obstructor
obtruder
obstetrix
obstriction
objurgatrix
Starts with OC
1 words
octroi
Starts with ON
1 words
ondatra
Starts with OP4 words
optometrist
ophthalmometry
operatrix
ophthalmotropometer
Starts with OR12 words
orchestra
orchestration
orchestrator
oratress
oratrix
orchestrion
organistrum
orchestrina
orchestralist
orthonitroaniline
orthopsychiatrist
orthoveratraldehyde
Starts with OS16 words
ostrich
ostracism
osetra
ostracod
osteopetrosis
ostracon
ossetra
ostracizer
ostracoderm
ostracodan
osculatrix
ostracean
ostrowskia
ostreiculturist
ostreodynamometer
ostreophage
Starts with OT
1 words
ottrelite
Starts with OU15 words
outrage
outreach
outro
outrigger
outstretch
outrider
outtrade
outrush
outrunner
outstroke
outring
outrope
outroper
outroop
outrooper
Starts with OV16 words
overconcentration
overstretch
overtreatment
overstress
overtrousers
overstrain
overtrump
overtrick
overcontribution
overcentralization
overstructure
overextraction
overabstraction
overregistration
overillustration
overneutralization
Starts with OX
2 words
oxytetracycline
oxytrope

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