PYROSULPHURIC
Pyr`o*sul*phu"ric, a. Etym: [Pyro- + -sulphuric.] (Chem.)
Defn: Pertaining to, or designating, an acid called also disulphuric acid) obtained by distillation of certain sulphates, as a colorless, thick, oily liquid, H2S2O7 resembling sulphuric acid. It is used in the solution of indigo, in the manufacture of alizarin, and in dehydration.
PYROTARTARIC
Pyr`o*tar*tar"ic, a. Etym: [Pyro- + tartaric.] (Chem.)
Defn: Pertaining to, or designating, an acid obtained as a white crystalline substance by the distillation of tartaric acid.
PYROTARTRATE
Pyr`o*tar"trate, n. (Chem.)
Defn: A salt of pyrotartaric acid.
PYROTECHNIAN
Pyr`o*tech"ni*an, n.
Defn: A pyrotechnist.
PYROTECHNIC; PYROTECHNICAL Pyr`o*tech"nic, Pyr`o*tech"nic*al, a. Etym: [Pyro- + technic, technical: cf. F. pyrotechnique. See Fire, Technical.]
Defn: Of or pertaining to fireworks, or the art of forming them.
Pyrotechnical sponge. See under Sponge.