公こう開かい講こう座ざMeaningsNoun1. extension lecturesKanji used公public開open講lecture座to sitComposed of公こう開かいopening to the public; making available to the public; exhibiting; unveiling; release (of a film, information, etc.); disclosure; publicationNoun講こう座ざcourse (e.g. of lectures); academic university unit (professor, lecturers, etc.)Noun