Negation
Negation , noun
[Latin negatio, from negare to say no, to deny; ne not + the root of aio I say; compare Greek {not transcribed}, Sanskrit ah to say; compare French négation. See No, adv., and compare Adage, Deny, Renegade.]
1.
The act of denying; assertion of the nonreality or untruthfulness of anything; declaration that something is not, or has not been, or will not be; denial; -- the opposite of affirmation.
Our assertions and negations should be yea and nay.
2.
(Logic) Description or definition by denial, exclusion, or exception; statement of what a thing is not, or has not, from which may be inferred what it is or has.