Word
silicon dioxide, n.
a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite
<noun.substance>
silica
silicon dioxide
silicon oxide
lexical pointers
derivationally related form
silicious
siliceous
semantic pointers
substance holonym
cristobalite
quartz
quartz, quartz glass, vitreous silica, lechatelierite, crystal
tridymite
hyponym
chert
flint
silex
hypernym
oxide