Countable Nouns Starting with OS and Containing R

Browse 56 valid English countable nouns starting with OS and containing R, from Ostrich, Oscillator, Osprey, Ostracism, Ostler, Osmolarity and Osteosarcoma to rarer terms. Check definitions and spelling below, or visit our noun grammar guide to review singular and plural count rules.

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Starts with OSC6 words
oscars
oscillator
oscillograph
oscillogram
osculatory
osculatrix
Starts with OSE
1 words
osetra
Starts with OSI
2 words
osier
osiery
Starts with OSM5 words
osmolarity
osmometer
osmiridium
osmeterium
osmerid
Starts with OSN
1 words
osnaburg
Starts with OSP
1 words
osprey
Starts with OSS7 words
ossuary
ossetra
ossifrage
ossature
ossarium
ossifier
ossifraga
Starts with OST24 words
ostrich
ostracism
ostler
osteosarcoma
osteria
osteonecrosis
osteoarthritic
osteoarthrosis
ostracod
osteopetrosis
ostracon
ostmark
ostracizer
osteoderm
ostracoderm
ostiary
osteoarthropathy
ostensorium
osteospermum
ostracodan
osteography
ostensory
osteochondropathy
osteochondrophyte

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