Dec 1, 2018 - 00:00
Dec 1, 2018 - 00:00
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INVAL'IDATE, v.t. [from invalid.]

1. To weaken or lessen the force of; more generally, to destroy the strength or validity of; to render of no force or effect; as, to invalidate an agreement or a contract.

2. To overthrow; to prove to be of no force; as, to invalidate an argument.

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