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Related to hydromancy: Astromancy
Divination by the observation of water.
[Middle English ydromancy, from Old French ydromancie, from Latin hydromantīa, from Greek hudromanteia : hudro-, hydro- + -manteia, -mancy.]
(Alternative Belief Systems) divination by water
hy•dro•man•cy(ˈhaɪ drəˌmæn si)
divination by means of the motions or appearance of water.
[1585–95; earlier hydromantie, -cie (< Middle French) « Late Greek hydromanteía divination by water. See hydro-1, -mancy]
a form of divination involving observations of water or of other liquids.See also: Divination, Water
A form of scrying which in this case is divination by water. Pegomancy is a form of hydromancy.