Lewis Short
(adjective) : căthēdrārĭus, a, um, id.
* Of or pertaining to an arm-chair: subsellia,Dig. 33, 10, 5: servi,who carry a chair,Sid. Ep. 1, 11.
* Esp., pertaining to the chair or office of a teacher: philosophi,teachers,Sen. Brev. Vit. 10, 1; cf. cathedra, II.; so, oratores,Sid. Ep. 4, 3.
Charlton T. Lewis, Charles Short, A Latin Dictionary