15 letters · 25 points in Scrabble
adjective composed of aggregates of crystals
originEtymology tree Proto-Indo-European *pleh₁- Proto-Indo-European *polh₁ús Ancient Greek πολῠ́ς (polŭ́s)lbor. English poly- English crystalline English polycrystalline From poly- + crystalline.
Etymology from Wiktionary, CC BY-SA 3.0