Strong's G2728 · Greek

κατιόω

katioo · kat-ee-o'-o

from 2596 and a derivative of 2447; to rust down, i.e. corrode

Scholarly Lexicons

Abbott-Smith Manual Greek Lexicon

 1 **† κατ-ιόω , -ῶ (intensive of ἰόω ; ἰός ), [in LXX: Si 12:11 *;] to rust over ; pass., become rusted over : Ja 5:3 .† 

G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain