The Collaborative International Dictionary
Hydrofluoric \Hy`dro*flu*or"ic\, a. [Hydro-, 2 + fluoric.] (Chem.) Pertaining to, or containing, hydrogen and fluorine; fluohydric; as, hydrofluoric acid.
Hydrofluoric acid (Chem.), a colorless, mobile, volatile liquid, HF, very corrosive in its action, and having a strong, pungent, suffocating odor. It is produced by the action of sulphuric acid on fluorite, and is usually collected as a solution in water. It attacks all silicates, as glass or porcelain, is the agent employed in etching glass, and is preserved only in vessels of platinum, lead, caoutchouc, or gutta-percha.
Wiktionary
a. (context chemistry English) Containing hydrogen and fluorine.
WordNet
Wikipedia
Usage examples of "hydrofluoric".
They may be dissolved in hydrofluoric acid either at once or after fusion with bisulphate of potash, and extraction with cold water.
This reaction could only take place on a planet receiving lots of ultra-violet because so much energy is needed to break up carbon tetrafluoride and hydrofluoric acid.
Hydrofluoric acid is only a moderately strong acid (unlike, say, hydrochloric acid) but it will dissolve glass.
Astronomers in Earth-bound observatories have also found unmistakable evidence of hydrochloric acid and hydrofluoric acid as gases in the upper atmosphere of Venus.
Also, the moisture in the air reacts with the cryolite to form sodium fluoride, hydrofluoric acid, and alumina, thus further worsening the ratio.
It had been a very high price to pay for a moment's carelessness with hydrofluoric acid, and the accident only reinforced his belief that he wanted nothing to do with the stuff.
When Component 31 is completed and placed in a 6 molar solution of hydrofluoric acid, the remaining structural elements should look like the diagram in the accompanying figure.
To send him to the Hunt would have meant more feral activity, more sabotage, more throats cut, more hydrofluoric acid thrown over Heroes in city alleyways at night, and more humans killed in reprisals, too, more human land expropriated.
We would be safer tossing around vials of concentrated hydrofluoric acid.
I think the explosion blew tiny drops of hydrofluoric acid into the other room.
After reading the up-timer handling instructions and warnings, he was happy to let others play with hydrofluoric acid.
What passes for air on Venus has layers of red mercuric sulfide and mercurous chloride in the lower reaches, and when you get above them to those pretty fluffy clouds tourists see on the way down, you find that some of them are droplets of sulfuric and hydrochloric and hydrofluoric acid.
We might as well have some fun before we go out looking for sand fleas that secrete hydrofluoric acid and menace our colonies.