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English definition of “through”

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through

preposition, adverb uk   /θruː/ us  

through preposition, adverb (PLACE)

A2 ( also US not standard thru) from one end or side of something to the other: They walked slowly through the woods. The boy waded through the water to reach his boat. He struggled through the crowd till he reached the front. How long the journey takes will depend on how long it takes to get through the traffic. Her words kept running through my mind/head (= I kept hearing her words in my imagination). We drove through the tunnel. I saw him drive through a red light (= he did not stop at the red traffic light). I'll put you through (= connect you by phone) (to the sales department).
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through preposition, adverb (TIME)

B1 from the beginning to the end of a period of time: It rained all/right through June and into the first half of July. We sat through two lectures and then left. She had just enough energy to get through the day. US She works Monday through Thursday (= from Monday to Thursday).
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through

preposition uk   /θruː/ us  

through

adjective uk   /θruː/ us  

through adjective (FINISHED)

having finished using or doing something: I've got some work to do but I should be through in an hour if you can wait. Are you through with that atlas?

through adjective (SUCCESSFUL)

be through (to sth) to achieve success in an exam, competition, etc. and progress to the next stage or a higher level: "Has she heard about her entrance exams yet?" "Yes, she's through." She's through to the next round of interviews.

through adjective (DIRECT)

C1 [only before noun] A through train or bus goes all the way from one place to another place without the passenger having to change trains or buses.
(Definition of through from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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