Countable Nouns That Start with O and End with ORY

Explore 8 verified English countable nouns starting with O and ending with ORY, including Observatory, Olfactory, Oratory, Offertory, Overstory, Osculatory and Ostensory. 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 OB
1 words
observatory
Starts with OF
1 words
offertory
Starts with OL
2 words
olfactory
olitory
Starts with OR
1 words
oratory
Starts with OS
2 words
osculatory
ostensory
Starts with OV
1 words
overstory

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