វគ្គជំនាញកុំព្យូទ័រ
ចំណេះដឹងទូទៅ
ម្ហូបអាហារ
កំប្លែង
ទស្សន៍ទាយ
small
medium
large
Acrania
ENGLISH MEANING
noun
1.
The
lowest
group
of
Vertebrata
,
including
the
amphioxus
, in
which
no
skull
exists
.
2.
Partial
or
total
absence
of the
skull
.