13 letters · 21 points in Scrabble
noun splitting a ray into two parallel rays polarized perpendicularly
originEtymology tree Proto-Indo-European *dwóh₁ Proto-Indo-European *dwi- Proto-Italic *dwi- Latin bi-bor. English bi- English refringence English birefringence From bi- + refringence.
Etymology from Wiktionary, CC BY-SA 3.0