There are 17 words that end with 'erium'.
| cerium | apterium |
| imperium | bacterium |
| criterium | deuterium |
| elaterium | meitnerium |
| osmeterium | psalterium |
| puerperium | magisterium |
| mycobacterium | cyanobacterium |
| archaebacterium | corynebacterium |
| enterobacterium | |
Note: These 17 words that end with 'erium' are found from the USA & Canada version of the tournament Scrabble word list.