1An auditorium or lecture hall — a large room in a school or facility used for lectures, ceremonies, or assemblies.
入学式は大学の講堂で行われた。
The entrance ceremony was held in the university's auditorium.
講堂に全校生徒が集まった。
All the students in the school gathered in the auditorium.
講堂のステージで卒業生代表がスピーチをした。
A graduate representative gave a speech on the auditorium stage.