hydrofluoric

[hahy-druh-floo r-ik, -flawr-, -flor-]

adjective

Origin of hydrofluoric

First recorded in 1815–25; hydro-² + fluoric

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

For deep etching, hydrofluoric acid is diluted with 1½ vols.
Scientific American Supplement, No. 1157, March 5, 1898
Various
Some maintained that they were dissolved in vats of hydrofluoric acid.
In the Control Tower
Will Mohler
A white powder, formed by digesting freshly precipitated carbonate of barium in hydrofluoric acid, in excess.
Cooley's Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades..., Sixth Edition, Volume I
Arnold Cooley
It may be prepared by the action of hydrofluoric acid upon lime, as directed under Barium, Fluoride of.
Cooley's Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades..., Sixth Edition, Volume I
Arnold Cooley
The pentafluoride SbF5 results when metantimonic acid is dissolved in hydrofluoric acid, and the solution is evaporated.
Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2
Various