suffix -ium Used to form the names of metal elements, after the style of early-named elements, as well as the isotopes of hydrogen. 0
suffix -ium By extension, appended to common words to create scientific-sounding or humorous-sounding fictional substance names. 0
suffix -ium Used to form the name of a mass (aggregation) of something, such as biologic tissue (for example, epithelium, pollinium). Words so formed often take "-a" for the plural. 0
suffix -ium Used to indicate the setting where a given activity is carried out: gymnasium, auditorium, stadium, colloquium, planetarium, podium, sanatorium. Words so formed often take "-a" for the plural. 0
suffix forming noun -ium indicating a metallic element 0
suffix forming noun -ium (in chemistry) indicating groups forming positive ions 0
suffix forming noun -ium indicating a biological structure 0
noun -ium forming Modern Latin names for chemical elements 0
noun -ium forming the names of certain positive ions 0
noun -ium forming the names of certain biological structures 0
