Definition of aqua fortis in English:

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aqua fortis

Pronunciation: /ˈäkwə ˈfôrtis/ /ˈak-/


Archaic term for nitric acid.
Example sentences
  • The old name of nitric acid is aqua fortis meaning ‘strong water.’
  • Old time gun makers stained their stocks with aqua fortis, a combination of nitric acid diluted with distilled water and iron filings.
  • Nitric acid at this phase is called aqua fortis and when it is concentrated, concentrated nitric.


Late 15th century: from Latin, literally 'strong water'.

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