hydromancy Meaning, Definition & Usage

  1. noun divination by water (as by patterns seen in the ebb and flow of the tides)

WordNet

Hy"dro*man`cy noun
Etymology
Hydro-, 1 + -mancy: cf. F. hydromancie.
Definitions
  1. Divination by means of water, -- practiced by the ancients.

Webster 1913