Definitions for "Posidonius"
Posidonius (Greek: Ποσειδώνιος / Poseidonios) "of Rhodes" (ὁ Ρόδιος) or, alternatively, "of Apameia" (ὁ Απαμεύς) (ca. 135 BCE - 51 BCE), was a Greek Stoic philosopher, politician, astronomer, geographer, historian, and teacher. He was acclaimed as the greatest polymath of his age. None of his vast body of work can be read in its entirety today as it exists only in fragments.
Posidonius is a lunar impact crater that is located on the western edge of Mare Serenitatis, to the south of Lacus Somniorum. The Chacornac crater is attached to the southeast rim, and to the north is Daniell crater.