Lewis Short
(verb) : prae-disco, ĕre
* To learn beforehand, make one's self acquainted with beforehand (rare but class.): aliquid,Cic. de Or. 1, 32, 147: ventos et varium caeli praediscere morem,Verg. G. 1, 51: sic ut praediscere possimus, utrum sit perseverans,Cael. Aur. Acut. 2, 18, 104.
Charlton T. Lewis, Charles Short, A Latin Dictionary