G49. hagnismos, hag-nis-mos’
from hagnizo; a cleansing (the act), i.e. (ceremonially) lustration:–purification.
TERM BIBLE SEARCH
Ac 21:26 Then /tote/ Paul /Paulos/ took /paralambano/ the men /aner/, and the next /echo/ day /hemera/ purifying himself /hagnizo/ with /sun/ them /autos/ entered /eiseimi/ into /eis/ the temple /hieron/, to signify /diaggello/ the accomplishment /ekplerosis/ of the days /hemera/ of purification /hagnismos/, until /heos/ that /hos/ an offering /prosphora/ should be offered /prosphero/ for /huper/ every /hekastos/ one /heis/ of them /autos/.
(KJV)