Obs. [noun of action f. L. certiōrāre: see prec. and -ATION.] A making certain or sure; certification.
1653. Manton, Exp. James ii. 21. Fittest to receive the witness and certioration of the Spirit.
1680. J. C., Vind. Oaths (ed. 2), 3. An oath then is for confirmation, and certioration.
