Its source is Isidoros, a Greek name meaning "Gift from Isis."
This boy's name is used in Russian.
Isis was the ancient Egyptian mother goddess whose name came to be identified with similar mythological figures in cultures throughout the ancient world. The cult devoted to her worship survived until the 6th century A.D.
Isidor Isaac Rabi (born 1898, died 1988)
American physicist who developed a method for measuring the magnetic properties of atoms.