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[on-set, awn-] /ˈɒnˌsɛt, ˈɔn-/

a beginning or start:
the onset of winter.
an assault or attack:
an onset of the enemy.
Phonetics. the segment of a syllable preceding the nucleus, as the gr in great.
Compare (def 5), 1 (def 14).
an attack; assault
a start; beginning

1530s, “attack, assault,” from on + set (n.); cf. to set (something) on (someone). Weaker sense of “beginning, start” first recorded 1560s. Figurative use in reference to a calamity, disease, etc. is from 1580s.

onset on·set (ŏn’sět’)
A beginning; a start, as of a cold.


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  • Onside

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