from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A salt of metasilicic acid, in which the ratio of the oxygen of the silica to the oxygen of the base is two to one.
from the GNU version of the Collaborative International Dictionary of English
- n. A salt of metasilicic acid; -- so called because the ratio of the oxygen of the silica to the oxygen of the base is as two to one. The bisilicates include many of the most common and important minerals.
from The Century Dictionary and Cyclopedia
- n. A salt formed by the union of a base and a silicic acid containing two atoms of silicon. It may be a bibasic or a polybasic acid.
- n. A salt of metasilicic acid, H2SiO3, in which the ratio of oxygen atoms combined with the base and silicon respectively is as 1:2: for example, calcium metasilicate (the mineral wollastonite), CaSiO3 or CaO.SiO2.
bi- + silicate (Wiktionary)
The standard lead frit is called lead bisilicate and is simply a combination of lead oxide and silica, which combines the lead in an insoluble form.