Countable Nouns Ending in UM and Containing U
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Starts with A
24 words asylum
aquarium
auditorium
atrium
annum
alum
addendum
allium
arboretum
athenaeum
arum
antiserum
anthurium
antrum
alyssum
alluvium
arcanum
agendum
armamentarium
antirrhinum
acetabulum
aconitum
adsum
abomasum
Starts with B
24 words bum
bacterium
bubblegum
biennium
begum
botulinum
boojum
basidium
bonum
bupleurum
bdellium
baculum
bifidum
blackgum
bluegum
brachium
ballium
barathrum
bryum
buccinum
bulbophyllum
bucranium
bullarium
bimillennium
Starts with C
24 words curriculum
consortium
continuum
condominium
chum
conundrum
colosseum
coliseum
compendium
colloquium
crematorium
capsicum
chrysanthemum
cerebellum
cranium
cerebrum
checksum
cecum
corundum
candelabrum
centrum
columbarium
clostridium
cryptosporidium
Starts with D
24 words drum
delirium
decorum
datum
dictum
duodenum
dumdum
delphinium
disequilibrium
diverticulum
desideratum
dolphinarium
dorsum
decennium
demonstrandum
diluvium
damnum
definiendum
depositum
dendrobium
dentalium
diazonium
designatum
deinotherium
Starts with E
24 words equilibrium
epithelium
emporium
eardrum
endometrium
elysium
euphonium
endothelium
erratum
extremum
encomium
endocardium
effluvium
epicardium
exordium
eulogium
exemplum
epineurium
epiphyllum
evangelium
endomysium
equisetum
eryngium
epithalamium
Starts with F
24 words forum
freemium
factotum
falciparum
flagellum
frustum
fum
frenulum
factum
filum
fusarium
folium
frenum
frigidarium
fanum
fideicommissum
falsum
fermentum
feretrum
filopodium
formicarium
florilegium
flabellum
feodum
Starts with G
24 words gum
gymnasium
geranium
granum
gynoecium
guaiacum
gymnatorium
gubernaculum
geum
gelsemium
gnetum
graphium
gymnocalycium
glochidium
gonium
gametangium
glaum
grassum
gatherum
glaucium
gnaphalium
gonidium
gynostemium
glaucidium
Starts with H
24 words hum
hoodlum
honorarium
harmonium
herbarium
hilum
hypericum
hospitium
hordeolum
hypochondrium
hippeastrum
helichrysum
hydronium
hibernaculum
hypogeum
heliotropium
haustorium
habendum
hymenium
hedysarum
hypanthium
hypogastrium
hypnum
horologium
Starts with I
24 words interregnum
imperium
infimum
ileum
inoculum
indecorum
ilium
ischium
infundibulum
incunabulum
indicium
insectarium
ignotum
impluvium
intermedium
indusium
idolum
individuum
involucrum
illuvium
indumentum
ideatum
illicium
infusorium
Starts with J
5 words jejunum
jasminum
jorum
jugum
jugulum
Starts with K
5 words kettledrum
khanum
kokum
kookum
khoum
Starts with L
24 words linoleum
lyceum
locum
labrum
labium
laburnum
lum
lycopodium
lustrum
lilium
loropetalum
luteum
labellum
leprosarium
lignum
ligustrum
linum
latifundium
leucanthemum
lythrum
lamellipodium
lamium
ledum
leontopodium
Starts with M
24 words medium
museum
minimum
maximum
mum
momentum
millennium
memorandum
magnum
moratorium
mausoleum
modicum
mycelium
myocardium
myometrium
mediastinum
magisterium
molluscum
meerschaum
manubrium
mycobacterium
marsupium
milium
mesothelium
Starts with N
24 words nasturtium
nostrum
natatorium
novum
nonpetroleum
nymphaeum
neuroepithelium
nerium
ngultrum
nanobacterium
nephridium
notandum
nitronium
notum
nitrobacterium
nelumbium
notaeum
nickum
nidularium
nitrenium
nidamentum
nitrosobacterium
nototherium
nipponanthemum
Starts with O
24 words optimum
opossum
ovum
omnium
omentum
organum
ostium
odeum
operculum
omasum
oceanarium
onium
origanum
oppidum
oogonium
ommatidium
oncidium
osculum
opusculum
oidium
ornithogalum
osmiridium
ostensorium
orarium
Starts with P
24 words premium
plum
podium
pendulum
possum
pandemonium
palladium
practicum
phylum
planetarium
plenum
plectrum
perineum
proscenium
presidium
psyllium
peritoneum
peplum
pericardium
penicillium
plasmodium
papadum
poppadum
paramecium
Starts with Q
8 words quantum
quorum
quadrennium
quadrivium
quinquennium
quotum
quadriennium
quaesitum
Starts with R
24 words referendum
rum
rectum
rostrum
rheum
residuum
reticulum
rhizobium
relatum
retinaculum
rumdum
refugium
redgum
regnum
responsum
radiostrontium
receptaculum
replum
rosarium
reptilium
rostellum
reddendum
resilium
rhodanthemum
Starts with S
24 words sum
stadium
spectrum
serum
slum
symposium
scum
stratum
scrum
strum
septum
scrotum
sanctum
sternum
sorghum
speculum
sputum
sanatorium
solarium
sanitarium
simulacrum
sacrum
striatum
substratum
Starts with T
24 words tantrum
thrum
terrarium
tum
talcum
trapezium
trillium
tympanum
tectum
trivium
tentorium
triduum
triennium
transuranium
taraxacum
tenaculum
tropaeolum
triticum
tegmentum
tepidarium
tapetum
teetotum
triclinium
triforium
Starts with U
12 words um
ultimatum
unicum
umbraculum
understratum
unguentum
uredium
unguentarium
uropygium
ultravacuum
uintatherium
uredinium
Starts with V
24 words vacuum
valium
vellum
viburnum
vivarium
velum
vomitorium
viaticum
vademecum
verticillium
vinculum
vallum
vexillum
vaccinium
velarium
veratrum
vestibulum
variorum
verbascum
vulsellum
vestigium
vasculum
veronicastrum
viscum
Starts with X
11 words xanthium
xiphisternum
xiphosternum
xenium
xenodochium
xeranthemum
xanthidium
xerophyllum
xenophyum
xeromyrum
xylomelum
Starts with Z
16 words zanthoxylum
zygopetalum
zoosporangium
zygosporangium
zythum
zooecium
zygophyllum
zoarium
zygomaticum
zoospermium
zoogonidium
zoothecium
zoocecidium
zygantrum
zoocytium
zoodendrium