Lewis Short
consessor (noun M) : consido
* One who sits near or by a person or thing, an assessor (several times in Cic.; elsewh. rare); in a court of justice, Cic. Fin. 2, 19, 62; at a feast,id. Fl. 11, 24; id. Phil. 5, 5, 13; Mart. 1, 27; but esp. in public exhibitions,Cic. Att. 2, 15, 2; Liv. 34, 54, 7; Val. Max. 1, 7, 8; cf.: dei Mithrae Dareus,Jul. Val. Rer. Gest. Alex. 1, 42.
Charlton T. Lewis, Charles Short, A Latin Dictionary