Strong's Greek #48
ἁγνίσωσιν

Englishman's Concordance (References)

ἁγνίσωσιν hagnisōsin — 1 Occurrence

John 11:55 - V-ASA-3P
GRK:πάσχα ἵνα ἁγνίσωσιν ἑαυτούς
NAS: the Passover to purify themselves.
KJV: the passover, to purify themselves.
INT: passover that they might purify themselves