RUBIDIUM is a playable word

rubidium Scrabble® Dictionary

noun
pl. rubidiums
a metallic element
(adjective) rubidic

42 Playable Words can be made from "RUBIDIUM"

   2-Letter Words (5 found)

   3-Letter Words (20 found)

   4-Letter Words (12 found)

   5-Letter Words (3 found)

   6-Letter Words (1 found)

   8-Letter Words (1 found)