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English definition of “thicken”

thicken

verb [I or T] uk   /ˈθɪk.ən/ us  
to (cause to) become thicker: Thicken the sauce with a little flour. The smoke thickened rapidly.Thick, dense and heavyPreparing foodPreparing food using heat
(Definition of thicken from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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