The phrase "a final plenary" is correct and usable in written English.
It can be used to refer to the last session or meeting in a series, often in a conference or formal gathering context.
Example: "The conference will conclude with a final plenary where all participants can share their insights and reflections."
Alternatives: "a concluding session" or "a closing plenary".
A formal announcement on the agreement was due to be made at a press conference in Vienna at midday (11am BST), after a final plenary meeting at 10.30am.
After a session that continued into the early hours of Thursday, Jalili held a bilateral meeting with his counterpart, Catherine Ashton, the EU high representative for foreign policy who acts as a convener for the six-nation group, before a final plenary meeting.
The agreements adopted at the 10th meeting of the Conference of the Parties (COP 10) to the 1992 CBD took years of preparatory work, 2 weeks of negotiations in Nagoya, and a final plenary session that ran past 2 a.m. local time on 30 October.
In a two-round evaluation, with a final plenary round, cases were assessed by the panellists (panellists were divided in sub-panels).
The Jury later met behind closed doors to analytically assess the document and a final plenary session presented and motivated criticisms, remarks and proposals in view of the document's first review.
In a final plenary session, Dr Marco Ranieri (Turin, Italy) presented late-breaking results from a trial of early (days 3 to 5) versus late (days 10 to 12) tracheostomy on the incidence of ventilator-acquired pneumonia.
The final plenary session provided an opportunity for groups to share their experiences and then a wider discussion considered key issues from both morning and afternoon sessions.
In response to a request from the delegates at this conference's final plenary session the steering committee prepared the first draft.
"It really went down to the wire with the final plenary meeting, it was suspended for an hour while final negotiations took place.
[On Friday, despite deep disagreements within the delegation, Valéry Giscard d'Estaing, the former French president who is the convention's president, told the final plenary session in Brussels that the convention had adopted a historic first draft.
Three days before the final plenary of the Round Table, there was supposed to be a symbolic meeting at the end - just as there had been a symbolic meeting at the beginning -- when 54 people would sit around this round table and symbolically announce the acceptance of the agreement.
