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unit

 
/ˈju·nɪt/ n [C] (SEPARATE PART)

Definition

a single item or a separate part of something larger: The first year of the course is divided into four units. This apartment building has 60 units (= separate apartments). A unit is also a small machine or part of a machine that has a particular purpose: the central processing unit of a computer A unit is also a piece of furniture or equipment used as part of a set of similar or matching pieces: a unit of a bookcase
(Definition of unit n (SEPARATE PART) from the Cambridge Academic Content Dictionary © Cambridge University Press)

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