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English definition of “tranquillize”

tranquillize

verb [T] uk (US usually tranquilize, UK usually tranquillise)   /ˈtræŋ.kwɪ.laɪz/ us    /ˈtræn-/
to make an animal or person become unconscious or calm, especially with a drug: a tranquillizing drug The dogs were tranquillized with a dart gun and taken to a shelter.Administering drugs and medicines
(Definition of tranquillize from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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