Isi·​ac | \ˈisēˌak, ˈizē-, ˈīsē-\
variants: or Isiacal \ ə̇ˈsīəkəl, (ˈ)ī¦sī-​ \

Definition of Isiac 

: of or relating to Isis of the cult of Isis

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History and Etymology for Isiac

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 isiacus + English -al

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to clear from alleged fault or guilt

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