quorum Look up quorum at Dictionary.com
1426, in ref. to certain eminent justices of the peace, from L. quorum "of whom," gen. pl. of qui (see who). The traditional wording of the commission appointing justices of the peace translates as, "We have also assigned you, and every two or more of you (of whom [quoram vos] any one of you the aforesaid A, B, C, D, etc. we will shall be one) our justices to inquire the truth more fully." The justices so-named were usually called the justices of the quorum. Meaning "fixed number of members whose presence is necessary to transact business" is first recorded 1616.