lecture meeting; lecture event
Refers to an organized event where one or more lectures are given, often by a noted speaker. Can be used for both the gathering itself and the occasion.
There will be a lecture on environmental issues at the university next week.
A Q&A session was held after the lecture meeting.
The university held a lecture meeting with a famous author.
I attended a lecture meeting about health last week.
The student group is planning a new lecture meeting.
The professor gave a lecture on environmental issues at the meeting.