Strong’s Greek
G4850 — sumpresbuteros
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
συμπρεσβύτερος
sumpresbuteros — pronounced soom-pres-boo'-ter-os
from 4862 and 4245; a co-presbyter:--presbyter, also an elder. see GREEK for 4245 see GREEK for 4862
1 occurrence in the KJV.
1 Peter 5:1
The elders which are among you I exhort, who am also an elder, and a witness of the sufferings of Christ, and also a partaker of the glory that shall be revealed: