Lexical Definition

‎συστρατιώτης‎ systratiṓtēs (soos-trat-ee-o'-tace) fellow soldier ^G:N-M
from ‎σύν‎ and ‎στρατιώτης‎

fellowsoldier.

• a co-campaigner, i.e. (figuratively) an associate in Christian toil

Abbott-Smith

* συν-στρατιώτης (Rec. συσ-), -ου, ὁ
a fellow-soldier (Plat., Xen., al.). Metaph., of fellowship in Christian service: Phl 2:25, Phm 2 .†

Abbott-Smith References

Liddell-Scott-Jones

συστρατιώτης, ου, ὁ,

fellow-soldier, [NT+5th c.BC+]:—feminine συστρᾰτηγ-ῶτις, ιδος, metaphorically, [Refs 1st c.AD+]

_{LSJ Scripture Refs: Phil.2.25}