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English definition of “essential”

essential

noun [C usually pl]    /ɪˈsen·ʃəl/
the basic things you need to live: The study estimated the cost of essentials for a family of four – its food, shelter, and clothing needs. Essentials are also the basic or most important part of something: the essentials of chemistry
(Definition of essential noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
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