You know what it looks like… but what is it called?
TAKE THE QUIZ“hydrofluoric”
The following 2 entries include the term hydrofluoric.
hydrofluoric acid
noun: an aqueous solution of hydrogen fluoride HF that is a weak poisonous acid, that attacks silica and silicates, and that is used especially in finishing and etching glass
anhydrous hydrofluoric acid
nounLove words? Need even more definitions?
Merriam-Webster unabridged