a Greek rhetorician, the teacher of M. Aurelius and L. Verus, was one of the secretaries of Hadrian, and was distinguished for his skill in the composition of the imperial letters. He wrote a work on the art of rhetoric. (Philostr. Vit. Soph. 1.22, who calls him τεχνογράφος; Capitol. Ver. 2; Aristeid. Or. Sacr. 5. vol. i. p. 335, ed. Jebb.)