Egyptian god prominent during the Graeco-Roman Period. The name seems to have been derived from OsirisApis, the deceased form of the Apis bull worshipped at Memphis. The deity was adopted by Ptolemy I and depicted with Greek features as a bearded man similar to the Greek god Zeus but with attributes derived from other Greek gods, like Dionysius and Aesculapius. Sarapis was promoted to the head of the Egyptian pantheon and considered the husband of Isis. He was regarded as a god of fertility and healing.
Historical Dictionary Of Ancient Egypt by Morris L. Bierbrier
Ancient Egypt. A Reference Guide. EdwART. 2011.