from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A salt of orthosilicic acid where the ratio of oxygen atoms united to the basic metals and silicon respectively is 1:1.
from the GNU version of the Collaborative International Dictionary of English
- n. A salt of orthosilicic acid, H4SiO4; -- so called because the ratio of the oxygen atoms united to the basic metals and silicon respectively is 1:1; for example, Mg2SiO4 or 2MgO.SiO2.
from The Century Dictionary and Cyclopedia
- n. A salt of orthosilicic acid (H4SiO4): so called because the ratio of oxygen atoms combined with the base to those combined with the silicon is 1:1. This is illustrated by zinc unisilicate, willemite, which has the formula Zn2SiO4 or 2ZnO.SiO2.
While these greenish particles, which you may perhaps mistake for chrysolite, or some similar unisilicate, really contain the precious metal, they are not entirely composed of it.