nĕgātĭo, ōnis, f. [nego],
I a denying, denial, negation , Cic. Sull. 13, 39: negatio inficiatioque facti, id. Part. 29, 102.—
II In partic., a word that denies, a negative , Ap. Dogm. Plat. 3, p. 32, 38.
negātiō ōnis, f nego, a denial, negation : vis negationis eius: facti. ...
An Elementary Latin Dictionary