Countable Nouns Starting with OS and Containing RA

This list gathers 14 English countable nouns starting with OS and containing RA, such as Ostracism, Osetra, Ostracod, Ostracon, Ossetra, Oscillograph and Ostracizer. Use the sorting controls below to organize entries by length, or consult our noun grammar guide to review singular and plural count rules.

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Starts with OSC
2 words
oscillograph
oscillogram
Starts with OSE
1 words
osetra
Starts with OSS3 words
ossetra
ossifrage
ossifraga
Starts with OST8 words
ostracism
ostracod
ostracon
ostracizer
ostracoderm
ostracodan
osteography
ostracean

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