- the water beneath the surface of the ground, consisting largely of surface water that has seeped down: the source of water in springs and wells.
Origin of ground water
First recorded in 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for ground water
The ground-water level will then be altered as shown by the broken line in the draining.Rural Hygiene
Henry N. Ogden
The ground-water level is of great importance to the well-being of man.
The oxide zone of these deposits has no close relation to the present topography or to the present ground-water level.
It should be clearly recognized that oxidizing processes are not limited to the zone above the ground-water level.
The top surface of this zone is called the water table, or the ground-water level.
- underground water that has come mainly from the seepage of surface water and is held in pervious rocks
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012