STEP Greek Lexicon: πρωτοστάτης

πρωτοστάτης, -ου, ὁ

(πρῶτος, ἵστημι) [in LXX: Job.15:24 AB * ;]

prop., of soldiers, one who stands first, one in the front rank (Thuc., Xen.); hence, metaphorically, a leader: Act.24:5.†

(AS)