invalidate

(definition) by Webster 1913 Wed Dec 22 1999 at 0:31:43

In*val"i*date (?), v. t. [imp. & p. p. Invalidated (?); p. pr. & vb. n. Invalidating.] [From Invalid null.]

To render invalid; to weaken or lessen the force of; to destroy the authority of; to render of no force or effect; to overthrow; as, to invalidate an agreement or argument.

 

© Webster 1913.

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