(Ποσειδώνιος/Poseidṓnios).
[1] Doctor, end of the 4th cent. BC
Doctor at the end of the 4th cent. BC, who wrote about mental illnesses and about ephiáltēs, a feeling of suffocation (cf. demons V. C.; Aet. 6,12). P. was taken by Philostorgius (Historia Ecclesiastica 8,10) to be the source for the assertion that insanity is not the result of demonic afflict…