ἀντιστράτηγος

A. enemy's general, Th. 7.86, D.H. 6.5, Plu. Sert. 12.
II. at Rome, acting commander or governor, either pro consule, Plb. 28.3.1, or pro praetore, D.C. 41.43.
2. propraetor, i.e. governor of a province with rank of pro praetore, IG 12(5).722 (Andros, ii B.C.).
3. lieutenant of a commander, Lat. legatus pro praetore, OGIiip.551 (Bargylia, ii B.C.), Plb. 3.106.2, 15.4.4, Plu. Comp.Lys.Sull. 4, etc.; in full, πρεσβευτὴς καὶ ἀ. J. AJ 14.12.13; ἀντιταμίας καὶ ἀ. proquaestor pro praetore, OGI 448 (i B.C.); πρεσβευτὴς Σεβαστοῦ ἀ., = Lat. legatus Augusti pro praetore, IGRom. 3.186 (Ancyra, ii A.D.), etc.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project