Nouns Ending in US and Containing OS

This list gathers 84 English nouns ending in US and containing OS, such as Phosphorus, Prospectus, Colossus, Brontosaurus, Tyrannosaurus, Stegosaurus and Brachiosaurus. Use the sorting controls below to organize entries by length, or consult our noun grammar guide to review pluralization and capitalization rules.

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Starts with A
8 words
allosaurus
ankylosaurus
apatosaurus
altostratus
albertosaurus
apostrophus
aetosaurus
anisostichus
Starts with B
5 words
brontosaurus
brachiosaurus
basilosaurus
bulbocavernosus
brosmius
Starts with C
17 words
colossus
cirrostratus
cnossus
costus
catostomus
chlamydosaurus
cumulostratus
cyclotosaurus
coccosteus
chondroglossus
cyclosorus
cynosurus
ceratoglossus
centrosoyus
chlamydoselachus
cnidoscolus
chelidosaurus
Starts with D
4 words
dilophosaurus
dunkleosteus
dermatonosus
dolichosaurus
Starts with E
6 words
elasmosaurus
edmontosaurus
edaphosaurus
eucinostomus
eosaurus
emprosthotonus
Starts with F
2 words
fractostratus
ferrophosphorus
Starts with G
2 words
giganotosaurus
glossopharyngeus
Starts with H
3 words
hadrosaurus
hyoscyamus
hydrosaurus
Starts with I
2 words
ichthyosaurus
ischiocavernosus
Starts with M
3 words
mosasaurus
megalosaurus
molossus
Starts with N
1 words
nimbostratus
Starts with O
3 words
osmanthus
organophosphorus
orthrosanthus
Starts with P
9 words
phosphorus
prospectus
plecostomus
postbus
propositus
pachycephalosaurus
psittacosaurus
postnatus
protospatharius
Starts with R
2 words
rosmarinus
radiophosphorus
Starts with S
10 words
stegosaurus
spinosaurus
seismosaurus
styracosaurus
somniosus
simosaurus
saurosuchus
schistosomus
solenostomus
schistoprosopus
Starts with T
3 words
tyrannosaurus
therizinosaurus
trichostrongylus
Starts with U
1 words
uredosorus
Starts with X
2 words
xenosaurus
xiphosurus
Starts with Z
1 words
zaglossus

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