• Webster's Revised Unabridged Dictionary
    • a Isiac Pertaining to the goddess Isis; as, Isiac mysteries.
    • ***
Century Dictionary and Cyclopedia
    • isiac Relating to Isis: as, the Isiac mysteries; Isiac priests.
    • ***
Chambers's Twentieth Century Dictionary
    • Isiac ī-si-ak. See Isis.
    • ***


Webster's Revised Unabridged Dictionary
L. Isiacus, Gr. , fr.


In literature:

We may mention here another inscribed tablet, the celebrated Isiac table in the Museum at Turin.
"Museum of Antiquity" by L. W. Yaggy
The Egyptians were not called Isiacs or Osiriacs.
"A Philosophical Dictionary, Volume 10 (of 10)" by François-Marie Arouet (AKA Voltaire)
The same occurs on the Isiac table.
"Ophiolatreia" by Anonymous