In law, plenary typically refers to something that is full, complete, or absolute. It is often used to describe a full or comprehensive meeting or decision-making body. For example, a plenary session is a meeting called by group leaders with the intention of having the entire group present.
In the legal context, plenary power refers to complete or absolute power, especially when granted to a governing body or authority. Likewise, an individual with plenary authority over a project possesses absolute power and control over that project.
[Last updated in February of 2024 by the Wex Definitions Team]