NEGATION

negation. Negation, n. a denial, a description by negative

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Ne‐ga″tion (?), n. [[L. negatio, fr. negare to say no, to deny; ne not + the root of aio I say; cf. Gr. �, Skr. ah to say; cf. F. négation. See No, adv., and cf. Adage, Deny, Renegade.]] 1. 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. Rogers. 2. 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.