14 letters · 26 points in Scrabble
originEtymology tree Proto-Indo-European *h₃erdʰ-der. Proto-Hellenic *ortʰwós Ancient Greek ὀρθός (orthós)lbor. English ortho- English chromatic English orthochromatic From ortho- + chromatic.
Etymology from Wiktionary, CC BY-SA 3.0