- noting or pertaining to ground water.
- noting or pertaining to explosive volcanic activity involving steam derived from ground water: a phreatic explosion.
Origin of phreatic
1890–95; < Greek phreat- (stem of phréar) artificial well + -ic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- geography of or relating to ground water occurring below the water tableCompare vadose
C19: from Greek phrear a well