Having no channel connecting swim-bladder and digestive tract, as in most Teleosts.
[Greek] Having no channel connecting swim-bladder and digestive tract, as in most Teleosts (zool.).
f[=i]-s[=o]-klis'tus, adj. having no air-bladder, or having it closed, as a fish. [Gr. physa, bellows, kleistos--kleiein, to close.]