† superˈprincipal,a. (Obs.rare—1), intended for *superprincipial(see super- II and principial), a rendering of eccl. Gr. ὑπεράρχιος before all beginning. 1677Gale Crt. Gentiles iv. ii. iii. §2. 246 Eulogus, in Photius [says] Essence it self is one thing in the superprincipal Trinitie, and another thing in us.