Advertisement

onset (n.)

1530s, "attack, assault, a rushing or setting upon," from on + set (n.); compare verbal phrase to set (something) on (someone), c. 1300, originally "sic (a dog) on." Weaker sense of "beginning, start" is recorded from 1560s. Figurative use in reference to a calamity, disease, etc. is from 1580s.

Others are reading

Advertisement
Advertisement
Definitions of onset

onset (n.)
the beginning or early stages;
the onset of pneumonia
Synonyms: oncoming
onset (n.)
(military) an offensive against an enemy (using weapons);
Synonyms: attack / onslaught / onrush
From wordnet.princeton.edu