Countable Nouns That Start with OR and End with S

Explore 19 verified English countable nouns starting with OR and ending with S, including Orthotics, Organogenesis, Orris, Organophosphorus, Orbicularis, Orchardgrass and Orchis. 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 ORA
1 words
oratress
Starts with ORB
1 words
orbicularis
Starts with ORC
3 words
orchardgrass
orchis
orchiepididymitis
Starts with ORE
1 words
orexis
Starts with ORG
3 words
organogenesis
organophosphorus
organometallics
Starts with ORN
2 words
ornithorhynchus
ornis
Starts with ORO
1 words
orogenesis
Starts with ORR
1 words
orris
Starts with ORT
6 words
orthotics
orthosis
orthomyxovirus
orthros
orthoaxis
orthrosanthus

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