Answer: ium

AnswerCrossword Clue
IUMEnding for many elements
IUMEnd of many a name on the periodic table
IUMRare-earth suffix
IUMElement ending
IUMEnd of many elements
IUMCommon suffix on chemical elements
IUMElementary ending
IUMSuffix used by physicists
IUMChemical suffix.
IUMSuffix in names of elements.
IUMSuffix with einstein
IUMElement naming suffix
IUMEnding for pod or consort
IUMThree-letter ending for a majority of periodic table elements
IUMElemental suffix
IUMElemental ending
IUMCompend end
IUMEinstein ending
IUMElementary suffix
IUMElement end, often
IUMSuffix in elements
IUMPeriodic table suffix
IUMFollower of Einstein?