Countable Nouns Ending in RUS and Containing O

Browse 113 valid English countable nouns ending in RUS and containing O, from Coronavirus, Chorus, Phosphorus, Brontosaurus, Norovirus, Torus and Cytomegalovirus 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 A
9 words
adenovirus
arbovirus
allosaurus
ankylosaurus
apatosaurus
albertosaurus
aetosaurus
aechmophorus
anomalurus
Starts with B
4 words
brontosaurus
brachiosaurus
baculovirus
basilosaurus
Starts with C
24 words
coronavirus
chorus
cytomegalovirus
coxsackievirus
carnotaurus
chlamydosaurus
chondrus
cyclotosaurus
canephorus
coenurus
catoptrophorus
cumulocirrus
cyclosorus
cynosurus
chaetopterus
chaetodipterus
cephalopterus
cynopterus
cyclophorus
chlamyphorus
chilomycterus
chilabothrus
cheilodipterus
cyclothurus
Starts with D
3 words
dilophosaurus
dolichosaurus
dolichurus
Starts with E
10 words
enterovirus
elasmosaurus
equinovarus
echovirus
edmontosaurus
edaphosaurus
electrophorus
ephorus
epomophorus
eosaurus
Starts with F
1 words
filovirus
Starts with G
1 words
giganotosaurus
Starts with H
3 words
hadrosaurus
helleborus
hydrosaurus
Starts with I
1 words
ichthyosaurus
Starts with L
1 words
leonurus
Starts with M
6 words
mosasaurus
megalosaurus
metapneumovirus
morbillivirus
myxovirus
mycovirus
Starts with N
2 words
norovirus
nematodirus
Starts with O
4 words
organophosphorus
oncovirus
orthomyxovirus
oncornavirus
Starts with P
18 words
phosphorus
papillomavirus
poliovirus
parvovirus
pylorus
poxvirus
paramyxovirus
polyomavirus
provirus
pachycephalosaurus
pelorus
picornavirus
pneumovirus
papovavirus
proestrus
psittacosaurus
polypterus
pyrophorus
Starts with R
5 words
retrovirus
rhinovirus
rotavirus
reovirus
rhabdovirus
Starts with S
8 words
stegosaurus
spinosaurus
sorus
semichorus
seismosaurus
styracosaurus
sceloporus
simosaurus
Starts with T
4 words
torus
tyrannosaurus
togavirus
therizinosaurus
Starts with U
1 words
uredosorus
Starts with X
3 words
xyleborus
xenosaurus
xiphosurus
Starts with Z
3 words
zonurus
zophorus
zoophorus

•Browse Countable Nouns by Letter (A to Z)

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ABCDEFGHIJKLMNOPQRSTUVWXYZ
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