ACQUITTANCE, contracts. An agreement in writing to discharge a party from an engagement to pay a sum of money. it is evidence of payment. It differs from a release in this, that the latter must be under seal, while an acquittance need not be under seal. Poth. Oblig. n. 781. In Pennsylvania, a receipt, (q. v.) though not under seal, has nearly the same effect as a release. 1 Rawle, R. 391. Vide 3 Salk. 298, pl. 2; Off. of Ex. 217 ; Co. Litt. 212 a, 273 a.