9 letter nouns that start with OP

We have listed 27 9-letter nouns that start with OP for you in this WordMom word list. All these 9-letter nouns starting with OP were verified by specialists in the English language.

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  • opalotype
  • operation
  • operative
  • operculum
  • operagoer
  • opercular
  • operosity
  • operatory
  • ophiology
  • ophiuchus
  • ophidioid
  • ophthalmy
  • opination
  • opiniatre
  • opisthion
  • opiniator
  • opobalsam
  • opodeldoc
  • oppressor
  • opponency
  • oppugnant
  • oppletion
  • opsimathy
  • optometry
  • optometer
  • optocoele
  • opusculum

9 letter nouns that start with