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English definition of “it”

it

pronoun    /ɪt, ət/
the thing or animal being spoken about, that has already been mentioned: I can’t find the newspaper. Do you know where it is? Someone is at the door. Find out who it is. It is sometimes used to introduce a statement that does not involve a particular event or person: It’s supposed to rain tomorrow.
(Definition of it pronoun from the Cambridge Academic Content Dictionary © Cambridge University Press)
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