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dioxide
noun
-
dioxide
,
dioxiding
,
dioxides
,
dioxided
a
chemical
compound
consisting
of
one
atom
of
another
element
combined
with
two
atoms
of
oxygen
.
•
Carbon
dioxide
is
a
greenhouse
gas
produced
by
burning
fossil
fuels
.
Carbon
dioxide
is
a
greenhouse
gas
produced
by
burning
fossil
fuels
.
•
During
photosynthesis
,
plants
absorb
carbon dioxide
from
the
air
.
During
photosynthesis
,
plants
absorb
carbon dioxide
from
the
air
.
Early
19th
century
:
back-formation
from
'deoxidize'
,
or
from
French
'dioxyde'
,
alteration
of
'acide
oxyde'
(
oxide
acid
),
from
Greek
'di-'
(
twice
)
+
'oxus'
(
sharp
,
acid
).
dioxide
dioxide
