Morpheme
-ium
Type
suffix
Denotation
(1) chemical suffix; (2) denotes a structure or category
Etymology
Latin adjectival suffix -ium (neuter of -ius)
Evidence
aquarium, brevium, borium, cadmium, calcium, chromium, consortium, delirium, emporium, gymnasium, helium, lithium, plutonium, reptilium, uranium
