in Law, the name of a certificate which the clerk of the pipe and auditors of the exchequer make at the request of any person who intends to plead or move in that court for the discharge of any thing; and the effect of it is, the certifying what does confare upon record touching the matter in question. A constat is held to be superior to a certificate; because this may err or fail in its contents; that cannot, as certifying nothing but what is evident upon record.

Also the exemplification under the great seal of the enrolment of any letters patent is called a constat.