Meaning of “lecture” in the English Dictionary

"lecture" in British English

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lecturenoun [ C ]

uk /ˈlek.tʃər/ us /ˈlek.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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lectureverb

uk /ˈlek.tʃər/ us /ˈlek.tʃɚ/

(Definition of “lecture” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"lecture" in American English

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lecturenoun [ C ]

us /ˈlek·tʃər/

lecture noun [ C ] (FORMAL TALK)

a formal, prepared talk given to a group of people, esp. students:

a lecture on astronomy

lecture noun [ C ] (CRITICISM)

a serious talk given to criticize someone or give someone advice:

She gave him a lecture about his table manners.
lecturer
noun [ C ] us /ˈlek·tʃər·ər/

lectureverb [ I/T ]

us /ˈlek·tʃər/

lecture verb [ I/T ] (TALK FORMALLY)

to give a formal, prepared talk to a group of people, esp. students:

[ I ] She’s lecturing on the geology of the region.

lecture verb [ I/T ] (CRITICIZE)

to give someone a serious talk to criticize or give advice to that person:

[ T ] He lectured me on the need to keep accurate records.

(Definition of “lecture” from the Cambridge Academic Content Dictionary © Cambridge University Press)