I.an affirmation, declaration, confirmation, or averment of a fact or assertion: “est enim jus jurandum adfirmatio religiosa,” Cic. Off. 3, 29; so Planc. ap. Cic. Fam. 10, 21, and Cic. ib. 7: “in spem venire alicujus adfirmatione de aliqua re,” Caes. B. G. 7, 30: “constantissima annalium adfirmatione,” Plin. 28, 2, 4, § 15; “multā abfirmatione abnuere,” Curt. 6, 11.
affirmātĭo (adf- ), ōnis, f. affirmo,