aqua fortis

from WordNet (r) 3.0 (2006)

aqua fortis
    n 1: acid used especially in the production of fertilizers and
         explosives and rocket fuels [syn: {nitric acid}, {aqua
         fortis}]

from The Collaborative International Dictionary of English v.0.48

Aqua fortis \A`qua for"tis\ [L., strong water.] (Chem.)
   Nitric acid. [Archaic]
   [1913 Webster]

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