prōrŏgātĭo, ōnis, f. [prorogo].
I A prolonging , extension of a term of office: prorogatio imperii, a prolongation of one's command , Liv. 8, 26 fin. —
II A putting off , deferring of an appointed time: diei, Cic. Att. 13, 43 (in Cic. Mur. 23, 47, the true reading is perrogationem; in Liv. 42, 30, 9, propagatio).