|underground water that has come mainly from the seepage of surface water and is held in pervious rocks|
|groundwater (ground'wô'tər) Pronunciation Key
Water that collects or flows beneath the Earth's surface, filling the porous spaces in soil, sediment, and rocks. Groundwater originates from rain and from melting snow and ice and is the source of water for aquifers, springs, and wells. The upper surface of groundwater is the water table.