postulatory UK /ˌpɒstjʊˈleɪtəɹi/US /ˌpɑstjʊˈleɪtəɹi/ adjective2 •Of the nature of a postulate.Whoever shall peruse the phytognomy of Porta and strictly observe how vegetable realities are forced into animal representations, may perceive the semblance is but postulatory. — 1650 •Supplicatory.The documents attested more than 400 miracles or extraordinary graces, and thirty postulatory letters from archbishops and bishops in France besought the beatification from the Holy See. — 1913 formsmore postulatory · most postulatory