quorum

A select body of (usually eminent) justices of the peace, every member of which had to be present to constitute a deciding body; a member of this body. Later more generally: all justices collectively.historical

The minimum number of members required for a group to officially conduct business and to cast votes, often but not necessarily a majority or supermajority.

• We can discuss the issue tonight but cannot vote until we have a quorum.

Distinguished or essential members of any body; a select company.archaic

The minimum number of votes that a distributed transaction has to obtain in order to be allowed to perform an operation in a distributed system.