lustral

Of, relating to, or used in a rite of purification.

Used in purification.

Pertaining to purification: as, lustral days.

Of or pertaining to or occurring in a lustrum.

Of or pertaining to, or used for, purification

Of or pertaining to a lustrum.

Of or pertaining to (ritual) purification

Of or relating to a lustrum, or period of five years.