វគ្គជំនាញកុំព្យូទ័រ
ចំណេះដឹងទូទៅ
ម្ហូបអាហារ
កំប្លែង
ទស្សន៍ទាយ
តូច
មធ្យម
ធំ
Pumice
Same as:
pumice stone
noun
1.
(a
light
,
porpus
volcanic
rock
used
in
polishing
and
cleaning
)
ថ្មខាត់
ENGLISH MEANING
noun
1.
A
very
light
porous
volcanic
scoria
,
usually
of a
gray
color
, the
pores
of
which
are
capillary
and
parallel
,
giving
it a
fibrous
structure
. It is
supposed
to be
produced
by the
disengagement
of
watery
vapor
without
liquid
or
plastic
lava
. It is
much
used
,
esp
. in the
form
of
powder
, for
smoothing
and
polishing
.
Called
also
pumice
stone
.