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hydroxide
noun
a
chemical
compound
containing
one
or
more
hydroxide
groups
(
OH
)
bound
to
a
metal
or
other
positive
ion
.
•
Sodium
hydroxide
is
a
strong
alkali
used
in
soap
making
.
Sodium
hydroxide
is
a
strong
alkali
used
in
soap
making
.
•
The
farmer
spread
calcium
hydroxide
on
the
field
to
neutralize
acidic
soil
.
The
farmer
spread
calcium
hydroxide
on
the
field
to
neutralize
acidic
soil
.
Coined
in
1812
by
German
chemist
Leopold
Gmelin
from
'hydro-'
(
from
hydrogen
)
+
'oxide'
,
referring
to
the
OH
group
.
