noun, plural for·tes [fawr-teez]. /ˈfɔr tiz/.
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Origin of fortis
Words nearby fortis
How to use fortis in a sentence
If a little aqua-fortis be mixed with the water, the writing will dry well, and not run out of its form when the paper is wetted.The Book of Curiosities|I. Platts
Boil some nut-galls in aqua fortis, and add to the infusion some gum Arabic and a little sulphuric acid.Secrets of Wise Men, Chemists and Great Physicians|William K. David
Dissolve fine silver in aqua fortis; and after the dissolution, add some distilled water in the same manner as in the gold ink.
Dissolve an ounce of fine silver in three ounces of strong aqua fortis, in a glass bottle.
Dissolve chalk in aqua fortis, to the consistence of milk, and add to that a strong solution of silver.