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Definitions

onset

[on-set, awn-] / ˈɒnˌsɛt, ˈɔn- /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Jeffries' lawyers argue that he is suffering with dementia and late onset of Alzheimer's disease and is unfit to face trial alongside his partner and their alleged middleman in October.

From BBC • Mar. 28, 2026

Moreover, the onset of deflation and growing competition from homegrown brands has more recently made competing in China a slog for Western brands.

From The Wall Street Journal • Mar. 20, 2026

However, other ice core records reveal a large volcanic sulfate spike that lines up precisely with the onset of cooling around 12,870 years ago.

From Science Daily • Mar. 20, 2026

Kelty is worried that with the onset of the summer planting season in the western hemisphere, the lack of fertilizer could reduce crop yields and lead to higher inflation going forward.

From MarketWatch • Mar. 19, 2026

Right from the onset, the case was clearly neither about Buck nor Bell.

From "The Gene" by Siddhartha Mukherjee