[医] 前脑

[ noun ]
the anterior portion of the brain; the part of the brain that develops from the anterior part of the neural tube
<noun.body>

Prosencephalon \Pros`en*ceph"a*lon\, n. [NL., fr. Gr. ? toward,
near to + E. encephalon.] [Sometimes abbreviated to proen.]
(Anat.)
(a) The anterior segment of the brain, including the cerebrum
and olfactory lobes; the forebrain.
(b) The cerebrum. --Huxley.