Noun | 1. | dexamethasone - a corticosteroid drug (trade names Decadron or Dexamethasone Intensol or Dexone or Hexadrol or Oradexon) used to treat allergies or inflammation anti-inflammatory, anti-inflammatory drug - a medicine intended to reduce inflammation adrenal cortical steroid, corticoid, corticosteroid - a steroid hormone produced by the adrenal cortex or synthesized; administered as drugs they reduce swelling and decrease the body's immune response; "adrenal cortical steroids are used to treat many different conditions" |