Aeration Zone
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- A portion of the lithosphere in which the functional interstices of permeable rock or earth are not filled with water under hydrostatic pressure. The interstices either are not filled with water or are filled with water that is no held by capillarity.
NOAA National Weather Service - Cite This Source - This Definition - Capillarity, Capillary Fringe, Capillary Zone, Effluent Stream, Ground water, Perched Groundwater, Phreatic water, Zone of saturation