Nessas of Chios lived in the fifth and early fourth centuries B.C.
He was said to have been a pupil of Democritus; but the two remaining references to his writings are literary.
1. (Nessas lengthens a vowel in Homer, disregarding the metre).
2. (Nessas derives the word 'Diaktoros' from 'Diagein': 'Conductor of souls').