Simple past tense and past participle of lecture.(verb)
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Use "lectured" in a sentence
"12 Stein lectured at Mills College and on the next day visited her old neighborhood in"
"People who've gone to "Harvard, Yale, Princeton, Columbia ..." he lectured -- in other words, "experts" -- think they know so much more than people who haven't."
"I have never taught; nor lectured, that is to say,"