/ ˈnɔːziə; NAmE ; ˈnɔːsiə/ noun
[ U ] the feeling that you have when you want to vomit , for example because you are ill / sick or are disgusted by sth :
A wave of nausea swept over her.
Nausea and vomiting are common symptoms.
—see also ad nauseam
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WORD ORIGIN
late Middle English : via Latin from Greek nausia , from naus ship.