IHS ancient form: An ancient depiction of the first three letters (iota ι, eta η, sigma σ) of the Greek spelling of Jesus (Ιησούς). The bar above the eta denotes 'abbreviation'.
IHS modern form: A modern depiction of the first three letters (iota ι, eta η·, sigma σ‚) of the Greek spelling of Jesus (Ιησούς). The bar above the eta denotes 'abbreviation'.
IHS, St. Monica: A Christian woman, she was married to a pagan husband whom she labored to convert, together with her eldest son, St. Augustine, who became the Bishop of Hippo. Died 387 A.D.