Dictionary | 2 Results
#1 onset n. [oncoming] the beginning or early stages; "the onset of pneumonia". wn
#2 onset n. [attack, onslaught, onrush] (military) an offensive against an enemy (using weapons); "the attack began at dawn". wn
#2 onset n. [attack, onslaught, onrush] (military) an offensive against an enemy (using weapons); "the attack began at dawn". wn
