Unisilicate
U`ni`sil´i`cate
| n. | 1. | (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. |
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.