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aqui-
aquiclude
aquiculture
aquifer
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aquilegia
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aquitard

a·qui·tard [ ákwə trd ] (plural a·qui·tards)


noun 
Definition:
 
geologic formation retarding water: a geologic formation that may contain ground water but is incapable of transferring that water to the surface

[Late 20th century. <aqui- + Latin tardus "slow, sluggish"]
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