The Collaborative International Dictionary
Pyroantimonic
Pyroantimonic \Pyr`o*an`ti*mon"ic\, a. [Pyro- + antimonic.] (Chem.) Pertaining to, or designating, an acid of antimony analogous to pyrophosphoric acid.
Wiktionary
pyroantimonic
a. of, or relating to pyroantimonic acid or its derivatives