credentiala.[Cf. It. credenziale, fr. LL. credentia. See Credence.] Giving a title or claim to credit or confidence; accrediting.()Their credential letters on both sides. (Camden.)n.[Cf. It. credenziale.]1. That which gives a title to credit or confidence.()2. Testimonials showing that a person is entitled to credit, or has right to exercise official power, as the letters given by a government to an ambassador or envoy, or a certificate that one is a duly elected delegate.()The committee of estates excepted against the credentials of the English commissioners. (Whitelocke.)Had they not shown undoubted credentials from the Divine Person who sent them on such a message. (Addison.)