The onset is the start or beginning of something, especially of something unpleasant.noun
Sniffles and a sore throat might be described as examples of the onset of a cold.YourDictionary definition and usage example. Copyright © 2013 by LoveToKnow Corp.
- an attack; assault
- a beginning; start
Used by arrangement with John Wiley & Sons, Inc.
- An onslaught; an assault.
- A beginning; a start: the onset of a cold.
- Linguistics The part of a syllable that precedes the nucleus. In the word nucleus (no͞oˈklē-əs), the onset of the first syllable is (n), the onset of the second syllable is (kl), and the last syllable has no onset.
onset - Medical Definition