Lexical Definition

‎διαμάχομαι‎ diamáchomai (dee-am-akh'-om-ahee) to contend sharply G:V
from ‎διά‎ and ‎μάχομαι‎

strive.

Usage: 1 form in 1 verse
Form Translated As     In Verse(s)
διεμάχοντο they were contending Acts.23.9

Abbott-Smith

δια-μάχομαι [in LXX for לחם ni., Da LXX 10:20; Si 8:1, 3 38:28 51:19 * ;]
1. to struggle against.
2. In argument, to contend: Ac 23:9.†

Abbott-Smith References

Book Refs
Daniel 10:20
Acts 23:9

Liddell-Scott-Jones

διαμάχομαι-ομαι,

future -μαχέσομαι (variant for{-μαχεσώμεθα} aorist subjunctive) [Refs 5th c.BC+]:—fight, contend, σιδήρῳ [Refs 5th c.BC+]; opposed to λανθάνειν, [Refs]; πρός τι variant in [Refs 5th c.BC+]; δ. μὴ μεταγνῶναι ὑμᾶς I resist to the uttermost your change of opinion, [Refs 5th c.BC+]

__2 exert oneself, strive earnestly, περὶ τούτου ὅπως.. [Refs 5th c.BC+]
__3 in argument, contend or maintain that.., with accusative et infinitive, [Refs]: with a negative, δ. τι μὴ εἶναι [Refs 5th c.BC+]; also δ. τι carry a point, [Refs]