sorosilicate

[ sawr-oh-sil-i-kit, -keyt, sohr- ]
/ ˌsɔr oʊˈsɪl ɪ kɪt, -ˌkeɪt, ˌsoʊr- /

noun Mineralogy.

any of the silicates in which each silicate tetrahedron shares one of its four oxygen atoms with a neighboring tetrahedron, the ratio of silicon to oxygen being two to seven.

Origin of sorosilicate

< Greek sōró(s) heap + silicate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019