nitric acid

Inorganic compound, colourless, fuming, highly corrosive liquid, chemical formula HNO₃. A common laboratory reagent, it is important in the manufacture of fertilizers and explosives (including nitroglycerin), as well as in organic syntheses, metallurgy, ore flotation, and reprocessing of spent nuclear fuel. A strong acid, it is toxic and can cause severe burns. It attacks most metals and is used for etching steel and photoengraving.

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• Fortis Healthcare Limited, a chain of hospitals based in India
• Fortis (phonetics), a linguistic term
• Fortis (finance), a financial services company, based in Belgium and the Netherlands
• Fortis Inc., a Canadian utility holding company
• Fortis Turkey Cup, Turkish football's annual cup competition
• Fortis Uhren AG, a Swiss watch company
• Rami Fortis, Israeli rock musician
• Fortis (software), Document Management Software by Westbrook Technologies, Inc.
• Fortis Translation Suite (software), Computer-assisted translation Software by MultiLing Corporation
• Galant Fortis, also known as the Mitsubishi Lancer
• The Fortis Pistol is a modern version of the popular Bren Ten Pistol