G2728
κατιόομαι
to corrode
κατ-ιόω, -ῶ (intensive of ἰόω; ἰός) [in LXX: Sir.12:11 * ;] to rust over; pass., become rusted over: Jas.5:3.† (AS)
The KJV translates G2728 in the following manner:
cankered (2x)
Full Thayer's lexicon entry
κατιόω — katióō
κατιόω, κατιω: perfect passive κατιωμαι; (see ἰός, 2); "to rust over (cf. κατά, III. 3), cover with rust": Jas 5:3. (Epictetus diss. 4, 6, 14; (Sir 12:11).)
1 occurrence