Deliberative body
From Wikinfo
A deliberative body (or deliberative assembly) is an organization which collectively makes decisions after debate and discussion. Examples of deliberative bodies include legislatures, boards of directors, or administrative bodies. Typically a decision
by the body is made by means of a vote on a motion or resolution, following debate and possibly amendment, conducted in accordance with customary or adopted parliamentary procedure (see rules of order).
Adapted from the Wikipedia article, "Deliberative_body" [1], used under the GNU Free Documentation License

