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English definition of “apparatus”

apparatus

noun [C, U]     /ˌæpərˈeɪtəs/ US  /ˌæpəˈrætəs/ (plural apparatus, apparatuses)
a set of equipment or tools used for a particular purpose : The diver wore breathing apparatus.Things needed for a task
(Definition of apparatus noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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