Meaning
Separation sep-a-ra'-shun: In the Pentateuch the word niddah specially points to a state of ceremonial uncleanness (Lev 12:2, Lev 12:5, Lev 15:20, Num 6:4, Num 12:13, Num 19:21). 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 nezer, see NAZIRITE.