called Ptolemy Soter. ?367–283 bc, king of Egypt (323–285 bc), a general of Alexander the Great, who obtained Egypt on Alexander's death and founded the Ptolemaic dynasty: his capital Alexandria became the centre of Greek culture
Ptolemy I in American English
noun
(surnamed Soter) 367?–280 b.c., ruler of Egypt 323–285: founder of Macedonian dynasty in Egypt