វគ្គជំនាញកុំព្យូទ័រ
ចំណេះដឹងទូទៅ
ម្ហូបអាហារ
កំប្លែង
ទស្សន៍ទាយ
small
medium
large
Hemihedral
ENGLISH MEANING
adjective
1.
Having
half
of the
similar
parts
of a
crystals
,
instead
of all;
consisting
of
half
the
planes
which
full
symmetry
would
require
, as
when
a
cube
has
planes
only
on
half
of
its
eight
solid
angles
, or one
plane
out
of a
pair
on
each
of
its
edges
; or as in the
case
of a
tetrahedron
,
which
is hemihedral to an
octahedron
, it
being
contained
under
four of the
planes
of an
octahedron
.