• Any of a class of chemical compounds of silicon, oxygen, and hydrogen, based on the repeating structural unit H<sub>2</sub>SiO.
  • any of a <xref>class</xref> of <xref>compound</xref> having a short <xref>repeating</xref> <xref>unit</xref> of <xref>silicon</xref> and <xref>oxygen</xref> <xref>atoms</xref> (either in a chain or a ring) with <xref>organic</xref> <xref>side chains</xref>
  • any of a large class of compounds that have alternate silicon and oxygen atoms
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