affirmātĭo — Lewis & Short
affirmātĭo (adf-), ōnis, f.affirmo,
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.