from The Century Dictionary.
- noun 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.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Min.) 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 Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mineralogy A
saltof orthosilicic acidwhere the ratioof oxygen atomsunited to the basic metals and silicon respectivelyis 1:1.
from Wiktionary, Creative Commons Attribution/Share-Alike License
uni- + silicate
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.