The Collaborative International Dictionary of English v.0.48:
Delphian \Del"phi*an\, a. Delphic. [1913 Webster]WordNet (r) 3.0 (2006):
Delphian adj 1: of or relating to Delphi or to the oracles of Apollo at Delphi; "Delphic oracle" [syn: Delphic, Delphian]