tevilah
Tevilah is a ritual immersion in water in Judaism. The term comes from Hebrew and denotes the act of achieving ritual purity (taharah) through immersion. The central setting for tevilah is the mikveh, a pool designed for ritual use, which holds a prescribed amount of water drawn from natural sources or rainwater. For a tevilah to be valid, the individual must be completely submerged, with the water contacting all parts of the body.
Purposes and contexts of tevilah include several distinct uses. In the laws of family purity, women observe
Variations by denomination exist in observance and interpretation. Orthodox Judaism generally requires tevilah in several contexts,
See also: mikveh, taharah, niddah, conversion to Judaism, tevilat keilim.