/ˈpli:nəri ||; ˈplinərɪ/adj (used about meetings, etc 指会议等) that should be attended by everyone who has the right to attend （有资格的人）全体出席的: The new committee holds its first plenary session this week. 新委员会定于本周举行第一次全体会议。 plenary noun [C] (plural plenaries) the opening/final plenary of the conference 大会开幕式╱闭幕式全体会议