also aquafortis, old commercial name for "diluted nitric acid," c. 1600, Latin, literally "strong water;" see aqua- + fort. So called for its power of dissolving metals (copper, silver) which are unaffected by other agents.
word-forming element meaning "water," from Latin aqua "water; the sea; rain," cognate with Proto-Germanic *akhwo (source of Old English ea "river," Gothic ahua "river, waters," Old Norse Ægir, name of the sea-god, Old English ieg "island"), from PIE root *akwa- "water."
mid-15c., "fortified place, stronghold," from Old French fort "fort, fortress; strong man," noun use of adjective meaning "strong, stout, sturdy; hard, severe, difficult; hard to understand; dreadful, terrible; fortified" (10c.), from Latin fortis "strong, mighty; firm, steadfast; brave, spirited," from Old Latin forctus, which is of unknown etymology. Possibly from PIE root *bhergh- (2) "high, elevated," with derivatives referring to hills and hill-forts, or possibly from *dher- "to hold firmly, support." Figurative use of hold the fort attested from 1590s.
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Harper, D. (n.d.). Etymology of aqua fortis. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/aqua fortis
Harper Douglas, “Etymology of aqua fortis,” Online Etymology Dictionary, accessed $(datetime), https://www.etymonline.com/word/aqua fortis.
Harper, Douglas. “Etymology of aqua fortis.” Online Etymology Dictionary, https://www.etymonline.com/word/aqua fortis. Accessed $(datetimeMla).
D. Harper. “Etymology of aqua fortis.” Online Etymology Dictionary. https://www.etymonline.com/word/aqua fortis (accessed $(datetime)).
Definitions of aqua fortis
aqua fortis (n.)
acid used especially in the production of fertilizers and explosives and rocket fuels;