Noun
the king of Egypt who founded the Macedonian dynasty in Egypt; a close friend and general of Alexander the Great who took charge of Egypt after Alexander died (circa 367-285 BC)
Source: WordNetProclus later retells a story that, when Ptolemy I asked if there was a shorter path to learning geometry than Euclid's Elements, "Euclid replied there is no royal road to geometry." Source: Internet
The first recorded school of anatomy was in Alexandria from about 300 to the 2nd century BC. citation Ptolemy I Soter was the first to allow for medical officials to cut open and examine dead bodies for the purposes of learning how human bodies operated. Source: Internet
The now lost history of Alexander's campaigns by the diadoch Ptolemy I (367–283 BCE ) may represent the first historical work composed by a ruler. Source: Internet