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Definition of -ium
1. Suffix. Used to form the names of metal elements, after the style of early-named elements, as well as the isotopes of hydrogen. ¹
2. Suffix. By extension, appended to common words to create scientific-sounding or humorous-sounding fictional substance names. ¹
3. Suffix. 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. ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of -ium
-ious -isation -ise -ish -ism -ist -ista -istic -istical -istically | -ite -itis -itol -itude -ity -ium (current term) -ive -ization -ize -izzle | -ja -k -k- -ki- -kin -kin- -kind -kinesis -kins -lalia |