fluoboric

from The Century Dictionary.

• Derived from or consisting of fluorin and boron.

from the GNU version of the Collaborative International Dictionary of English.

• adjective (Chem.) Pertaining to, derived from, or consisting of, fluorine and boron.
• adjective (Chem.) a double fluoride, consisting essentially of a solution of boron fluoride, in hydrofluoric acid. It has strong acid properties, and is the type of the borofluorides. Called also borofluoric acid.