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English definition of “sunstroke”

sunstroke

noun [U] uk   /ˈsʌn.strəʊk/ us    /-stroʊk/
an illness caused by spending too much time in strong heat and light from the sun: Someone who is suffering from sunstroke feels dizzy and has a high temperature, but does not sweat.Fevers and infectious diseasesColds and flu
(Definition of sunstroke from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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