Countable Nouns Ending in UM and Containing A
Browse 620 valid English countable nouns ending in UM and containing A, from Maximum, Stadium, Vacuum, Quantum, Asylum, Aquarium and Auditorium 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
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
13 words bacterium
basidium
baculum
blackgum
brachium
ballium
barathrum
bucranium
bullarium
benzenediazonium
bromatium
bungarum
buphthalmum
Starts with C
24 words crematorium
capsicum
chrysanthemum
cranium
candelabrum
columbarium
cambium
caladium
cyanobacterium
conservatorium
calvarium
callosum
calcaneum
coagulum
cavum
cafetorium
claustrum
capitellum
charmonium
capitulum
castellum
corynebacterium
caldarium
cinerarium
Starts with D
20 words datum
desideratum
dolphinarium
demonstrandum
damnum
dentalium
diazonium
designatum
domatium
denotatum
dicranum
diaconicum
dichasium
diachylum
diatretum
dracocephalum
dichapetalum
diachaenium
disciplinarium
drepanium
Starts with E
24 words eardrum
erratum
endocardium
epicardium
evangelium
epithalamium
explanandum
epigastrium
eupatorium
explicandum
emplastrum
enterobacterium
epitympanum
eubacterium
excambium
ergastulum
extracurriculum
emendandum
exacum
epicranium
endostracum
endocranium
expansum
endangium
Starts with F
20 words factotum
falciparum
flagellum
factum
fusarium
frigidarium
fanum
falsum
formicarium
flabellum
fumatorium
fastigium
fastidium
faciendum
farfugium
falcatifolium
flabrum
favelidium
favellidium
flabellarium
Starts with G
17 words gymnasium
geranium
granum
guaiacum
gymnatorium
gubernaculum
graphium
gymnocalycium
gametangium
glaum
grassum
gatherum
glaucium
gnaphalium
glaucidium
gastraeum
graptopetalum
Starts with H
19 words honorarium
harmonium
herbarium
hippeastrum
hibernaculum
haustorium
habendum
hedysarum
hypanthium
hypogastrium
helianthemum
hydropericardium
hyracotherium
hieracium
hematopericardium
haustellum
halimium
hydropneumopericardium
hamamelidanthemum
Starts with I
7 words incunabulum
insectarium
ideatum
interambulacrum
intervallum
inclinatorium
inhalatorium
Starts with J
1 words jasminum
Starts with K
1 words khanum
Starts with L
14 words labrum
labium
laburnum
loropetalum
labellum
leprosarium
latifundium
leucanthemum
lamellipodium
lamium
labarum
latrocinium
laconicum
laserpicium
Starts with M
24 words maximum
memorandum
magnum
moratorium
mausoleum
myocardium
mediastinum
magisterium
meerschaum
manubrium
mycobacterium
marsupium
megatherium
macallum
microsporangium
megasporangium
mesogastrium
melampodium
macrosporangium
marrubium
mesembryanthemum
mutandum
mortarium
miracidium
Starts with N
11 words nasturtium
natatorium
nymphaeum
nanobacterium
notandum
nitrobacterium
notaeum
nidularium
nidamentum
nitrosobacterium
nipponanthemum
Starts with O
14 words organum
omasum
oceanarium
origanum
ommatidium
ornithogalum
orarium
organistrum
ossarium
oxypetalum
ommateum
ordalium
ophidiarium
ophthalmophyllum
Starts with P
24 words pandemonium
palladium
practicum
planetarium
pericardium
plasmodium
papadum
poppadum
paramecium
praetorium
pelargonium
panjandrum
pallium
pantoum
paludamentum
pomatum
propionibacterium
prothalamium
panicum
procambium
praeludium
pericranium
paspalum
pactum
Starts with Q
5 words quantum
quadrennium
quadrivium
quadriennium
quaesitum
Starts with R
11 words relatum
retinaculum
radiostrontium
receptaculum
rosarium
rhodanthemum
rastrum
ramentum
respiratorium
ranarium
restibrachium
Starts with S
24 words stadium
stratum
sanctum
sanatorium
solarium
sanitarium
simulacrum
sacrum
striatum
substratum
sugarplum
sporangium
solanum
sargassum
sphagnum
solatium
stramonium
seaquarium
saeculum
sesamum
superstratum
spermatogonium
sudarium
sustentaculum
Starts with T
24 words tantrum
terrarium
talcum
trapezium
tympanum
transuranium
taraxacum
tenaculum
tropaeolum
tepidarium
tapetum
tetrazolium
tanacetum
termitarium
talinum
testatum
thalictrum
trachelium
taurobolium
tetramethylammonium
tentaculum
trachelospermum
tintinnabulum
trankum
Starts with U
6 words ultimatum
umbraculum
understratum
unguentarium
ultravacuum
uintatherium
Starts with V
18 words vacuum
valium
vivarium
viaticum
vademecum
vallum
vaccinium
velarium
veratrum
variorum
verbascum
vasculum
veronicastrum
verumontanum
vibraculum
vampyrum
velamentum
vibracularium
Starts with X
3 words xanthium
xeranthemum
xanthidium
Starts with Z
7 words zanthoxylum
zygopetalum
zoosporangium
zygosporangium
zoarium
zygomaticum
zygantrum