Countable Nouns Starting with O and Containing PT

Browse 41 valid English countable nouns starting with O and containing PT, from Option, Optional, Optimization, Optics, Optimum, Optimist and Optic to rarer terms. Check definitions and spelling below, or visit our noun grammar guide to review singular and plural count rules.

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Starts with OC
2 words
octocopter
octapeptide
Starts with OD
1 words
odontopteryx
Starts with OL
1 words
oligopeptide
Starts with ON
1 words
onychocryptosis
Starts with OP24 words
option
optional
optimization
optics
optimum
optimist
optic
optimizer
optician
optometrist
optionality
optative
optionee
optant
opter
optime
optocoupler
optimates
optimate
optometer
optophone
opticist
optologist
optomeninx
Starts with OR8 words
ornithopter
orthoptist
orthopteran
orthopteroid
orthopter
orthopterist
orthopteron
orthopterologist
Starts with OV4 words
oversubscription
oviraptor
overoptimist
oversusceptibility

•Browse Countable Nouns by Letter (A to Z)

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