Strong's G1245 — διακαθαρίζω (verb)
diakatharizo (dee-ak-ath-ar-id'-zo) v.
1. to cleanse perfectly
2. (specially) winnow
[from G1223 and G2511]
KJV: thoroughly purge 
Root(s): G1223, G2511 
Hebrew root: καθαρίζω
Occurrences: 2