- SiOH4
- Tetrabasic Tet`ra*bas"ic, a. [Tetra- + basic.] (Chem.) Capable of neutralizing four molecules of a monacid base; having four hydrogen atoms capable of replacement by bases; quadribasic; -- said of certain acids; thus, normal silicic acid, {Si(OH)4}, is a tetrabasic acid. [1913 Webster]
The Collaborative International Dictionary of English. 2000.