ˈisēˌak, ˈizē-, ˈīsē- adjective
or isi·a·cal ə̇ˈsīəkəl, (ˈ)ī|sī-
Usage: usually capitalized
Etymology: isiac from Latin isiacus, from Greek isiakos, from Isis, originally Egyptian goddess of motherhood and the family whose cult spread throughout the Mediterranean world in Hellenistic times; isiacal from Latin isiac us + English -al
: of or relating to Isis of the cult of Isis