Lewis Short
praepŏsĭtĭo (noun F) : praepono.
* A putting or setting before, a preferring, preference, Cic. Fin. 3, 16, 54.
* A placing or setting over as commander or president, an appointing to command (postclass.): aliquem navi,Dig. 14, 1, 1, § 12.
* In gram., a preposition, Cic. Or. 47, 158; cf.: praeposito in privatur verbum eā vi, quam haberet, si in praepositum non fuisset,id. Top. 11: cum praepositione dicitur volgo ornamentum,Varr. L. L. 6, § 76 Müll.; Quint. 1, 4, 13 et saep.
Charlton T. Lewis, Charles Short, A Latin Dictionary