(Ἄψυρτος), or ABSYRTUS, one of the principal veterinary surgeons of whom any remains are still extant, was born, according to Suidas (s. v.) and Eudocia (Violar. ap. Villoison, Anccd. Graeca, vol. i. p. 65), at Prusa or Nicomedia in Bithynia. He is said to have served under Constantine in his campaign on the Danube, which is generally supposed to mean that under Constantine the Great, A. D. 322, but some refer it to that under Constantine IV. (or Pogonatus), A. D. 671.
[W.A.G]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890