LUTETIUM /ljuːˈtiːʃiəm/ Scrabble 10 Words With Friends 14 Definition noun a trivalent metallic element of the rare earth group. — synonyms: lutecium, Lu, atomic_number_71 See all 62 words you can make from LUTETIUM → 8-letter words Words starting with L Words ending with M ← Unscramble different letters