Countable Nouns That Start with CO and End with IS

Explore 28 verified English countable nouns starting with CO and ending with IS, including Colitis, Conjunctivitis, Coulis, Coreopsis, Commis, Coccidiosis and Corydalis. Sort these count nouns with singular and plural forms by word length for ESL grammar practice, determiner usage, and plural spelling below, or review singular and plural count rules in our noun grammar guide.

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Starts with COB
1 words
cobitis
Starts with COC
3 words
coccidiosis
coccidioidomycosis
cochylis
Starts with COD
1 words
codonopsis
Starts with COL
9 words
colitis
collis
colpitis
colorectitis
colipyelitis
colocentesis
colacobiosis
colicystitis
coloclysis
Starts with COM
1 words
commis
Starts with CON
3 words
conjunctivitis
coniosis
conchitis
Starts with COR
7 words
coreopsis
corydalis
coronis
cordocentesis
corneitis
coracobrachialis
corylopsis
Starts with COS
1 words
cosmopolis
Starts with COU
2 words
coulis
counterhypothesis

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