13 letters · 26 points in Scrabble
noun a corticosteroid drug (trade names Decadron or Dexamethasone Intensol or Dexone or Hexadrol or Oradexon) used to treat allergies or inflammation
originEtymology tree English dex- English -a- English -methasone English dexamethasone From dex- + -a- + -methasone (“prednisone or prednisolone derivative”).
Etymology from Wiktionary, CC BY-SA 3.0