adjective phre·at·ic \frē-ˈa-tik\

Definition of phreatic

  1. 1 :  of, relating to, or being groundwater

  2. 2 :  of, relating to, or being an explosion caused by steam derived from groundwater

Origin and Etymology of phreatic

Greek phreat-, phrear well; akin to Armenian ałbiwr spring, Old High German brunno — more at burn

First Known Use: circa 1890

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