/ diːˈhaɪdreɪt; NAmE ; ˌdiːhaɪˈdreɪt; NAmE / verb
1.
[ vn ] [ usually passive ] to remove the water from sth, especially food, in order to preserve it
2.
to lose too much water from your body; to make a person's body lose too much water :
[ v ]
Runners can dehydrate very quickly in this heat.
[ vn ]
the dehydrating effects of alcohol
► de·hy·dra·tion / ˌdiːhaɪˈdreɪʃn; NAmE / noun [ U ]:
to suffer from dehydration
► de·hy·drated /ˌdiːhaɪˈdreɪtɪd/ adjective :
Drink lots of water to avoid becoming dehydrated.
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WORD ORIGIN
late 19th cent.: from de- (expressing removal) + Greek hudros , hudr- water.