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English definition of “subject”

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subject

noun [C]  /ˈsʌb·dʒɪkt, -dʒekt/ us  

subject noun [C] (AREA OF DISCUSSION)

something that is being discussed or considered: School officials broached the subject of extending the school year. It seemed like a good idea to change the subject.

subject noun [C] (SCHOOL COURSE)

an area of knowledge that is studied in school or college: My favorite subjects are history and geography.

subject noun [C] (PERSON)

a person who lives or who has the right to live in a particular country, esp. a country with a king or queen: a British subject

subject noun [C] (GRAMMAR)

grammar the person or thing that performs the action of a verb, or which is joined to a description by a verb: "Bob" is the subject of the sentence, "Bob threw the ball."
(Definition of subject from the Cambridge Academic Content Dictionary © Cambridge University Press)
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