10 letters · 19 points in Scrabble
adjective of or relating to a molecule made up of more than two atoms
originEtymology tree Proto-Indo-European *pleh₁- Proto-Indo-European *polh₁ús Ancient Greek πολῠ́ς (polŭ́s)lbor. English poly- English atomic English polyatomic From poly- + atomic.
Etymology from Wiktionary, CC BY-SA 3.0