Adjective
Of or relating to the Congregation of Sisters of St. Agnes.
(rare) Of or pertaining to any of several people named Agnes. (Can we add an example for this sense?)
Source: en.wiktionary.orgWe have diligently recruited new providers that have enhanced the comprehensive services and programs we offer the Waupun community, and we are backed by the full resources of Agnesian HealthCare.” Source: Internet