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English definition of “lecture”

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lecture

noun [C] uk   /ˈlek.tʃər/ us    /-tʃɚ/
B1 a formal talk on a serious subject given to a group of people, especially students: We went to a lecture on Italian art. Who's giving the lecture this afternoon?
Compare
an angry or serious talk given to someone in order to criticize their behaviour: My dad gave me a lecture on the evils of alcohol last night.
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lecture

verb uk   /ˈlek.tʃər/ us    /-tʃɚ/
C2 [I] to give a formal talk to a group of people, often at a college or university: For ten years she lectured in law. She travelled widely in North America, lecturing on women's rights. [T] to talk angrily or seriously to someone in order to criticize their behaviour: His parents used to lecture him on his table manners.
(Definition of lecture from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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