Countable Nouns Ending in EN and Containing O

Browse 173 valid English countable nouns ending in EN and containing O, from Open, Dozen, Token, Hydrogen, Nitrogen, Abdomen and Estrogen 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
18 words
abdomen
androgen
adaptogen
antiandrogen
antiestrogen
afikomen
anticarcinogen
autopen
alloantigen
agglutinogen
agnomen
acrogen
aerogen
amidogen
aesthesiogen
amylogen
alkylogen
antianaphylactogen
Starts with B
6 words
biogen
boreen
bokken
brotchen
bousingken
botryogen
Starts with C
20 words
collagen
cohen
coven
carcinogen
colleen
cognomen
chalcogen
cryogen
cocitizen
copen
chorten
cocarcinogen
chymotrypsinogen
chromogen
coden
choirscreen
chloragogen
cochurchwarden
calyptrogen
coctoantigen
Starts with D
10 words
dozen
doyen
dolmen
docken
dihalogen
dermatogen
desmogen
dictyogen
diaminogen
diisatogen
Starts with E
8 words
estrogen
entheogen
endogen
exogen
electrogen
esthesiogen
encephalitogen
erythrogen
Starts with F
6 words
fourteen
foramen
fenoprofen
foretoken
filmogen
frithsoken
Starts with G
8 words
godden
groschen
garryowen
goitrogen
galjoen
gombeen
gowpen
gorhen
Starts with H
5 words
hydrogen
halogen
hallucinogen
hoyden
histogen
Starts with I
4 words
ibuprofen
immunogen
isoantigen
ionogen
Starts with K
2 words
kohen
kyogen
Starts with L
5 words
lederhosen
lozen
lysogen
lepidosiren
leukemogen
Starts with M
14 words
microgreen
mitogen
moorhen
mangosteen
mondegreen
methanogen
morgen
morphogen
mavourneen
moreen
milliroentgen
monohydrogen
mucinogen
molimen
Starts with N
5 words
nitrogen
noncitizen
nonwoven
nomen
noncarcinogen
Starts with O
6 words
open
omen
overburden
obesogen
oncogen
orogen
Starts with P
22 words
pollen
pathogen
phytoestrogen
plasminogen
progestogen
prenomen
praenomen
poteen
pnictogen
pyrogen
pepsinogen
psoralen
postteen
perlemoen
phytopathogen
posteen
poshteen
phellogen
pampoen
precipitinogen
photogen
proteinochromogen
Starts with R
2 words
roentgen
rowen
Starts with S
13 words
smokescreen
shonen
stollen
sloven
shoneen
solen
somaten
saprogen
sorren
silbergroschen
soken
streptosolen
schoppen
Starts with T
6 words
token
touchscreen
teratogen
trypsinogen
tropocollagen
thrombogen
Starts with U
1 words
urobilinogen
Starts with V
6 words
veldskoen
veldtschoen
voteen
veldschoen
velskoen
viologen
Starts with W
4 words
woolen
woodwaxen
woodhen
woadwaxen
Starts with X
1 words
xanthogen
Starts with Z
1 words
zymogen

•Browse Countable Nouns by Letter (A to Z)

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