Countable Nouns That Start with OP and End with AN

Explore 5 verified English countable nouns starting with OP and ending with AN, including Optician, Ophidian, Oppidan, Ophiuran and Opisthocoelian. Sort these count nouns with singular and plural forms by word length for ESL grammar practice, determiner usage, and plural spelling below, or review singular and plural count rules in our noun grammar guide.

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Starts with OPH
2 words
ophidian
ophiuran
Starts with OPI
1 words
opisthocoelian
Starts with OPP
1 words
oppidan
Starts with OPT
1 words
optician

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