πεντακοσιάρχης

ου, ὁ
A. commander of 512 men, Ascl. Tact. 2.10, Arr. An. 7.25.6, Ael. Tact. 9.5 :—also πεντακοσί‐αρχος, ὁ, PPetr. 3p.4 (iii B.C.), Sammelb. 7245.2 (iii B.C.), Plu. Alex. 76.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project