from the GNU version of the Collaborative International Dictionary of English

  • adj. Pertaining to, or designating, an acid (formerly called antimonic acid) analogous to metaphosphoric acid, and obtained as a white amorphous insoluble substance, (HSbO3).
  • adj. Formerly, designating an acid, which is now properly called pyroantimonic acid, and analogous to pyrophosphoric acid.

from The Century Dictionary and Cyclopedia

  • Noting an acid, HSbO3, obtained by heating ortho-antimonic acid to 175° C. The metantimonic acid of Frémy (H4Sb2O7) is now called pyro-antimonic acid, thus preserving analogy with the different phosphoric acids.


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