Library / 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:

Nouns denoting substances

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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