From Longman Dictionary of Contemporary Englishdehydratede‧hy‧drate /ˌdiːhaɪˈdreɪt $ diːˈhaɪdreɪt/ verb 1 [transitive]DRY to remove the liquid from a substance such as food or a chemical → rehydrate, hydrate The substance is dehydrated and stored as powder.2 [intransitive, transitive]DRY to lose too much water from your body, or to make this happen Alcohol dehydrates the body. —dehydrated adjective —dehydration /ˌdiːhaɪˈdreɪʃən/ noun [uncountable]→ See Verb table
Examples from the Corpus
dehydrate• The milk is dehydrated and stored as powder.• I shove aside a pile of dehydrated red and black typewriter ribbons and set my machine down with a clunk.• High temperatures make people dehydrate very quickly. 