Countable Nouns That Start with OS and End with IS

Explore 6 verified English countable nouns starting with OS and ending with IS, including Osmosis, Osteonecrosis, Osteomyelitis, Osteoarthrosis, Osteopetrosis and Osteoclasis. 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 OSM
1 words
osmosis
Starts with OST
5 words
osteonecrosis
osteomyelitis
osteoarthrosis
osteopetrosis
osteoclasis

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