n. The act of falsifying or making false; false representation; the act of deceptively altering, adulterating, counterfeiting, misrepresenting, etc.: as, the falsification of weights and measures, of goods, or of coin; falsification of a record, or of an author's meaning.n. A showing to be false or erroneous; confutation: as, the falsification of a prediction; the falsification of a charge.n. In law: The offense of falsifying a record. See falsify, v. t.n. In equity, the act of showing an item claimed on the credit side of an account to be erroneous.