12 letters · 18 points in Scrabble
adjective relating to or characterized by double refraction
originEtymology tree Proto-Indo-European *dwóh₁ Proto-Indo-European *dwi- Proto-Italic *dwi- Latin bi-bor. English bi- English refringent English birefringent From bi- + refringent.
Etymology from Wiktionary, CC BY-SA 3.0