Fuming \Fum"ing\, a.
Producing fumes, or vapors.
[1913 Webster]
{Cadet's fuming liquid} (Chem.), alkarsin.
{Fuming liquor of Libavius} (Old Chem.), stannic chloride;
the chloride of tin, {SnCl4}, forming a colorless, mobile
liquid which fumes in the air. Mixed with water it
solidifies to the so-called butter of tin.
{Fuming sulphuric acid}. (Chem.) Same as {Disulphuric acid},
uder {Disulphuric}.
[1913 Webster]