Definition of “onset” - English Dictionary

“onset” in English

See all translations

onsetnoun

uk /ˈɒn.set/ us /ˈɑːn.set/

-onsetsuffix

uk /-ˈɒn.set/ us /-ˈɑːn.set/

(of an illness or medical condition) starting at the stated time or in the stated way:

early-onset dementia
sudden-onset hearing loss

(Definition of “onset” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“onset” in American English

See all translations

onsetnoun [ U ]

us /ˈɔn·set, ˈɑn-/

the beginning of something:

We have to get the roof fixed before the onset of winter.

(Definition of “onset” from the Cambridge Academic Content Dictionary © Cambridge University Press)