plenary

1. ADJ A plenary session or plenary meeting is one that is attended by everyone who has the right to attend. 全体出席的[技术] [ADJ n]

...a plenary session of the Central Committee. …一次中央委员会全会。

2. N-COUNT Plenary is also a noun. 全体会议

There'll be another plenary at the end of the afternoon after the workshop. 傍晚专题讨论会后将另有一个全体会议。