Lewis Short
cătēchūmĕnus | -a, ae (noun M.f) = κατηχούμενος, η: m., and , , f.
* One who is receiving elementary instruction in religion, a catechumen, Tert. Praescr. 41 et saep.—In fem., Aug. Ep. ad Euseb. 169; Ambros. Ep. 34.
Charlton T. Lewis, Charles Short, A Latin Dictionary