Strong’s Greek
G4890 — sundrome
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
συνδρομή
sundrome — pronounced soon-drom-ay'
from (the alternate of) 4936; a running together, i.e. (riotous) concourse:--run together. see GREEK for 4936
1 occurrence in the KJV.
Acts 21:30
And all the city was moved, and the people ran together: and they took Paul, and drew him out of the temple: and forthwith the doors were shut.