大だい教きょう室しつMeaningsNoun1. lecture hall; lecture theatre; auditoriumKanji used大large教teach室roomComposed of大だいlarge; big; great; huge; vast; major; important; serious; severe; prominent; …Prefix教きょう室しつclassroom; lecture room; department (in a university); class; lessons; course; school (for a particular discipline); teaching establishmentNoun