Dictionary

onset

noun on·set \-ˌset\

: the beginning of something

Full Definition of ONSET

1
:  attack, assault <withstand the onset of the army>
2
:  beginning, commencement <the onset of winter>

Examples of ONSET

  1. <the walls withstood the onset of the first battalion>
  2. <the claim that if you take enough vitamin C at the onset of a cold, you'll often recover faster>

First Known Use of ONSET

1535
ONSET Defined for Kids

onset

noun on·set \ˈn-ˌset, ˈän-\

Definition of ONSET for Kids

1
:  beginning 1 <the onset of winter>
2
:  2attack 1
Medical Dictionary

onset

noun on·set \ˈn-ˌset, ˈän-\

Medical Definition of ONSET

:  the initial existence or symptoms of a disease <the onset of scarlet fever>

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