The Collaborative International Dictionary of English v.0.48:
Vicarial \Vi*ca"ri*al\ (v[-i]*k[=a]"[i^]*al), a. [Cf. F. vicarial.] 1. Of or pertaining to a vicar; as, vicarial tithes. [1913 Webster] 2. Delegated; vicarious; as, vicarial power. [1913 Webster]WordNet (r) 3.0 (2006):
vicarial adj 1: of or relating to or characteristic of a vicar