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English definition of “major”

major

adjective [before noun] (IMPORTANT)    /ˈmeɪ.dʒər/ US  /-dʒɚ/
B2 more important, bigger, or more serious than others of the same type: All of her major plays have been translated into English. Sugar is a major cause of tooth decay. There are two problems with this situation, one major, one minor. Citrus fruits are a major source of vitamin C. There has been a major change in attitudes recently. The United States is a major influence in the United Nations. → Compare minor adjectiveVery important or urgent
(Definition of major adjective (IMPORTANT) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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