Countable Nouns Starting with OS and Containing ER

Explore 14 verified English countable nouns starting with OS and containing ER, including Ostler, Osteria, Osier, Osmometer, Ostracizer, Osteoderm and Ostracoderm. Browse these count nouns with singular and plural forms below, or review singular and plural count rules in our noun grammar guide.

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Starts with OSI
2 words
osier
osiery
Starts with OSM3 words
osmometer
osmeterium
osmerid
Starts with OSS
1 words
ossifier
Starts with OST8 words
ostler
osteria
ostracizer
osteoderm
ostracoderm
osteospermum
ostreodynamometer
ostleress

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