seminar UK /ˈsɛmɪnɑː/US /ˈsɛmɪnɑɹ/noun 2verb 1forms 3 noun2 •A class held for advanced studies in which students meet regularly to discuss original research, under the guidance of a professor.Students attended a seminar on climate change.She gave a guest lecture during the philosophy seminar. •A meeting held for the exchange of useful information by members of a common business community.The company hosted a training seminar for new employees. verb1 •To participate in or lead a seminar. formsseminared · seminaring · seminars