Definition of diatomaceous earth
di`a`to`ma´ceous earth`
1.
(Geol.)
a
deposit
of
fine
,
usually
white
,
siliceous
material
,
composed
mainly
of
the
shells
of
the
microscopic
plants
called
diatoms
;
also
called
infusorial
earth
,
kieselguhr
,
and
diatomite
.
It
is
used
in
polishing
powder
,
and
in
the
manufacture
of
dynamite
.
Related Words
diatomite
,
earth
,
filter
,
ground
,
kieselguhr
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