-arium
a suffix occurring in loanwords from Latin, which often denote a location or receptacle (armarium; caldarium; solarium; vivarium). It has limited productivity in English, especially in words denoting an artificial environment for plants or animals, on the model of vivarium or herbarium: aquarium; insectarium; terrarium.
Compare
-ary.
Origin of -arium
< Latin
-ārium; see
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British Dictionary definitions for -arium
-arium
suffix forming nouns
indicating a place for or associated with something
aquarium; planetarium; solarium
Word Origin for -arium
from Latin
-ārium, neuter of
-ārius
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