Countable Nouns That Start with A and End with IUM

Explore 53 verified English countable nouns starting with A and ending with IUM, including Aquarium, Auditorium, Atrium, Allium, Anthurium, Alluvium and Armamentarium. 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 AC3 words
acroterium
acarodomatium
acaridomatium
Starts with AD
1 words
adenium
Starts with AE8 words
aeonium
aerarium
aecium
aecidium
aethalium
aeciotelium
aegopodium
aerobium
Starts with AL3 words
allium
alluvium
allodium
Starts with AM
2 words
amphithecium
amphigastrium
Starts with AN16 words
anthurium
androecium
antheridium
antependium
anacardium
anthodium
anhalonium
androconium
anticlinorium
androsporangium
androgonium
anoplotherium
androgametangium
androgonidium
anaerobium
androclinium
Starts with AP5 words
apodyterium
appressorium
aprium
apothecium
apterium
Starts with AQ
1 words
aquarium
Starts with AR6 words
armamentarium
archegonium
archaebacterium
arbitrium
arctium
archesporium
Starts with AS5 words
aspidium
asplenium
aspersorium
ascidium
ascogonium
Starts with AT
1 words
atrium
Starts with AU
1 words
auditorium
Starts with AV
1 words
avicularium

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