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ground water

or groundwater

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
1885-90 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for ground-water
Historical Examples
  • A level tract where the ground-water surface coincides with the surface of the ground is a swamp or marsh.

    The Elements of Geology William Harmon Norton
  • It should be clearly recognized that oxidizing processes are not limited to the zone above the ground-water level.

  • The ground-water surface is the name given the upper surface of ground water, the level below which all rocks are saturated.

    The Elements of Geology William Harmon Norton
  • The top surface of this zone is called the water table, or the ground-water level.

  • Unfavorable to all field works on account of ground-water and floods, and not thick enough for cave shelters.

  • The oil and gas distillates migrate upward under gas pressure and under pressure of the ground-water.

  • The oxide zone of these deposits has no close relation to the present topography or to the present ground-water level.

  • Gypsum is fairly soluble in ground-water, and sink-holes and solution cavities are often developed in gypsum deposits.

  • In a humid climate the larger ravines through which the run-off flows soon descend below the ground-water surface.

    The Elements of Geology William Harmon Norton
  • The low state of the rivers was an index of a low level of the ground-water.

British Dictionary definitions for ground-water

ground water

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
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