[sawr-oh-sil-i-kit, -keyt, sohr-]
noun Mineralogy.
  1. 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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018