aquifer

The definition of an aquifer is a natural well created by an underground rock or other geological formation.

(noun)

An example of an aquifer is The Great Artesian Basin.

See aquifer in Webster's New World College Dictionary

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noun

an underground layer of porous rock, sand, etc. containing water, into which wells can be sunk

Origin: ModL: see aqua & -fer

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See aquifer in American Heritage Dictionary 4

noun

An underground bed or layer of permeable rock, sediment, or soil that yields water.

Related Forms:

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