There are 18 words that end with 'cium'.
aecium | calcium | zoecium |
gynecium | lutecium | francium |
indicium | silicium | zooecium |
americium | gynaecium | gynoecium |
androecium | apothecium | lawrencium |
paramecium | endothecium | perithecium |
Note: These 18 words that end with 'cium' are found from the USA & Canada version of the tournament Scrabble word list.