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English definition of “topic”

topic

noun [C] uk   /ˈtɒp.ɪk/ us    /ˈtɑː.pɪk/
B1 a subject that is discussed, written about, or studied: Our discussion ranged over various topics, such as acid rain and the hole in the ozone layer.
(Definition of topic from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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