Crossword clues for the word: ERBIUM The word ERBIUM has appeared as an answer to at least 12 crossword clues on different crossword puzzles. Crossword clues for ERBIUM Showing 1 to 12 of 12 results Clue(s) A rare earth Atomic number 68 Element #68 Element discovered in 1843 Element nitrogen is missing from compound number 1 Element used in nuclear technology Malleable rare-earth element Metallic element Rare earth metal Rare-earth element. Silvery metallic element Soft metallic element