sep-a-rā´shun: In the Pentateuch the word niddah specially points to a state of ceremonial uncleanness (, ; ff; ff; ; ). For a description of the “water of purification,†used for cleansing what was ceremonially unclean (Nu 19), see HEIFER, RED; UNCLEANNESS. For “separation†in the sense of nēzer, see NAZIRITE.