Strong’s Greek
G2728 — katioo
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
κατιόω
katioo — pronounced kat-ee-o'-o
from 2596 and a derivative of 2447; to rust down, i.e. corrode:--canker. see GREEK for 2596 see GREEK for 2447
1 occurrence in the KJV.
James 5:3
Your gold and silver is cankered; and the rust of them shall be a witness against you, and shall eat your flesh as it were fire. Ye have heaped treasure together for the last days.