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1. silicon dioxide
noun.
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
chert
flint
silicon oxide
silex
vitreous silica
tridymite
quartz
lechatelierite
silica
quartz glass
oxide
crystal
cristobalite
Antonyms
softhearted
Featured Games
2. dioxide
noun.
(daɪˈɑːkˌsaɪd)
An
oxide
containing
two
atoms
of
oxygen
in
the
molecule.
Synonyms
sulfur dioxide
sulphur dioxide
carbonic acid gas
nitrogen dioxide
CO2
chlorine dioxide
oxide
carbon dioxide
Etymology
dioxide (English)
di- (English)
δία (Ancient Greek (to 1453))
δίς (Ancient Greek (to 1453))
oxide (English)
3. silicon
noun.
(ˈsɪləkən)
A
tetravalent
nonmetallic
element;
next
to
oxygen
it
is
the
most
abundant
element
in
the
earth's
crust;
occurs
in
clay
and
feldspar
and
granite
and
quartz
and
sand;
used
as
a
semiconductor
in
transistors.
Synonyms
granite
semiconductor
chemical element
Si
silicone polymer
semiconducting material
feldspar
atomic number 14
clay
quartz
silicone
sand
element
felspar
Antonyms
unsteadiness
insulator
roughen
software
curve
Etymology
silicon (English)
silex (Latin)
silica (English)
silex (Irish)
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