Countable Nouns That Start with A and End with UM
Explore 95 verified English countable nouns starting with A and ending with UM, including Asylum, Aquarium, Auditorium, Atrium, Annum, Alum and Addendum. 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 AB
1 words abomasum
Starts with AC7 words
acetabulum
aconitum
acetum
aciculum
acroterium
acarodomatium
acaridomatium
Starts with AD8 words
addendum
adsum
adytum
adenium
adiantum
adminiculum
adstratum
additum
Starts with AE9 words
aeonium
aerarium
aecium
aecidium
aeroperitoneum
aethalium
aeciotelium
aegopodium
aerobium
Starts with AF
1 words affectum
Starts with AG
2 words agendum
ageratum
Starts with AL7 words
alum
allium
alyssum
alluvium
alburnum
allodium
allegatum
Starts with AM5 words
amentum
amomum
ambulacrum
amphithecium
amphigastrium
Starts with AN24 words
annum
antiserum
anthurium
antrum
antirrhinum
androecium
antheridium
antependium
anacardium
anethum
animalculum
angraecum
anthodium
anhalonium
androconium
angrecum
anticlinorium
androsporangium
androphorum
androgonium
anoplotherium
androgametangium
androgonidium
anaerobium
Starts with AP5 words
apodyterium
appressorium
aprium
apothecium
apterium
Starts with AQ
1 words aquarium
Starts with AR11 words
arboretum
arum
arcanum
armamentarium
argumentum
archegonium
archaebacterium
arbitrium
argyranthemum
arctium
archesporium
Starts with AS8 words
asylum
asarum
aspergillum
aspidium
asplenium
aspersorium
ascidium
ascogonium
Starts with AT
2 words atrium
athenaeum
Starts with AU
1 words auditorium
Starts with AV
1 words avicularium