from
The Collaborative International Dictionary of English v.0.48
Silicofluoric \Sil`i*co*flu*or"ic\, a. (Chem.)
Containing, or composed of, silicon and fluorine; especially,
denoting the compounds called silicofluorides.
[1913 Webster]
{Silicofluoric acid} (Chem.), a compound of hydrofluoric acid
and silicon fluoride, known only in watery solution. It is
produced by the action of silicon fluoride on water, and
is regarded as an acid, {H2SiF6}, and the type and origin
of the silicofluorides.
[1913 Webster]