a porous deposit of rock, such as a sandstone, containing water that can be used to supply wells
WordReference Random House Learner's Dictionary of American English © 2026
aq•ui•fer /ˈækwəfɚ/USA pronunciation
n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2026- Geologya geological formation of rock, gravel, or sand that contains or conducts groundwater.
aq•ui•fer
(ak′wə fər),USA pronunciation n.
- Geologyany geological formation containing or conducting ground water, esp. one that supplies the water for wells, springs, etc.
- French aquifère (adjective, adjectival); see aqui-, -fer
- probably 1900–05
Collins Concise English Dictionary © HarperCollins Publishers::
'aquifer' also found in these entries (note: many are not synonyms or translations):