| / English Dictionary |
SILICON DIOXIDE
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
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
Synonyms:
silica; silicon dioxide; silicon oxide
Classified under:
Hypernyms ("silicon dioxide" is a kind of...):
oxide (any compound of oxygen with another element or a radical)
Hyponyms (each of the following is a kind of "silicon dioxide"):
chert (variety of silica containing microcrystalline quartz)
flint (a hard kind of stone; a form of silica more opaque than chalcedony)
silex (a pure form of finely ground silica)
Holonyms ("silicon dioxide" is a substance of...):
cristobalite (a white mineral consisting of silica; found in volcanic rocks)
quartz (a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities)
crystal; lechatelierite; quartz; quartz glass; vitreous silica (colorless glass made of almost pure silica)
tridymite (a mineral form of silica)
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