See the entire entry for dǝḵū, dǝḵūṯā n.f. purification process

TN Lev14:2 :דא תהוי גזירת אוריתה דמצרעה ביומא דדכותיה : this will be the decree of the written law in the day of his purification

See the entire entry for mṣrˁ n.m. leper