any of various polymeric organic silicon compounds obtained as oils,
greases,
> or plastics and used especially for water-resistant and heat-resistant
> lubricants, varnishes, binders, and electric insulators
> ---
>
> sil·i·ca
>
> noun
>
> : silicon dioxide SiO2 occurring in crystalline, amorphous, and impure
forms
> (as in quartz, opal, and sand respectively)

Huh? --

Elaine (with really low IQ)