វគ្គជំនាញកុំព្យូទ័រ
ចំណេះដឹងទូទៅ
ម្ហូបអាហារ
កំប្លែង
ទស្សន៍ទាយ
តូច
មធ្យម
ធំ
Gnomon
ENGLISH MEANING
noun
1.
The
space
included
between
the
boundary
lines
of two
similar
parallelograms
, the one
within
the
other
, with an
angle
in
common
; as, the gnomon
bcdefg
of the
parallelograms
ac and af. The
parallelogram
bf is the
complement
of the
parallelogram
df.
2.
The
style
or
pin
,
which
by
its
shadow
,
shows
the
hour
of the
day
. It is
usually
set
parallel
to the earth's
axis
.
3.
A
style
or
column
erected
perpendicularly
to the
horizon
,
formerly
used
in
astronomocal
observations
.
Its
principal
use
was to
find
the
altitude
of the
sun
by
measuring
the
length
of
its
shadow
.
4.
The
index
of the
hour
circle
of a
globe
.