វគ្គជំនាញកុំព្យូទ័រ
ចំណេះដឹងទូទៅ
ម្ហូបអាហារ
កំប្លែង
ទស្សន៍ទាយ
small
medium
large
Orthoceras
ENGLISH MEANING
noun
1.
An
extinct
genus
of
Paleozoic
Cephalopoda
, having a
long
,
straight
,
conical
shell
. The
interior
is
divided
into
numerous
chambers
by
transverse
septa
.