17 letters · 25 points in Scrabble
originEtymology tree Proto-Indo-European *terh₂- Proto-Indo-European *-t Proto-Indo-European *térh₂t Proto-Indo-European *-ónts Proto-Indo-European *tr̥h₂ónts Proto-Indo-European *tr̥h₂n̥ts Proto-Italic *trāns Proto-Italic *trāns- Latin trans-bor. English trans- English disciplinary English transdisciplinary From trans- + disciplinary.
Etymology from Wiktionary, CC BY-SA 3.0