វគ្គជំនាញកុំព្យូទ័រ
ចំណេះដឹងទូទៅ
ម្ហូបអាហារ
កំប្លែង
ទស្សន៍ទាយ
small
medium
large
Corundum
ENGLISH MEANING
noun
1.
The
earth
alumina
, as
found
native
in a
crystalline
state
,
including
sapphire
,
which
is the
fine
blue
variety
; the
oriental
ruby
, or
red
sapphire
; the
oriental
amethyst
, or
purple
sapphire
; and
adamantine
spar
, the
hair-brown
variety
. It is the
hardest
substance
found
native
,
next
to the
diamond
.