Noun
aquifuge (plural aquifuges)
(geology) An aquiclude.
An aquitard can sometimes, if completely impermeable, be called an aquiclude or aquifuge. Source: Internet
Related terms include aquitard, which is a bed of low permeability along an aquifer, citation and aquiclude (or aquifuge), which is a solid, impermeable area underlying or overlying an aquifer. Source: Internet