Definition of Opisthobranchia
O`pis`tho`bran´chi`a
n. pl.
1.
(Zool.)
A
division
of
gastropod
Mollusca
,
in
which
the
breathing
organs
are
usually
situated
behind
the
heart
.
It
includes
the
tectibranchs
and
nudibranchs
.
Related Words
class
,
class
Gasteropoda
,
class
Gastropoda
,
Gasteropoda
,
Gastropoda
,
Nudibranchia
,
order
Nudibranchia
,
subclass
Opisthobranchia
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Opossum shrimp
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