n. plPhysoclisti(Zoöl) An order of teleost in which the air bladder has no opening.
Century Dictionary and Cyclopedia
nphysoclistiIn ichthyology, a group of teleost fishes having the duct between the air-bladder and the intestine closed: Opposed to Physostomi. It includes the acanthopterygian fishes, and also the synentognathous fishes, the sub-brachial and jugular malacopterygians, the lophobranchiates, and the plectognaths. In Cope's system of classification it is a primary group of actinopterous fishes without a pneumatic duct, with the parietal bones separated by the supraoccipital, and the ventrals thoracic or jugular and without basilar segments.
Webster's Revised Unabridged Dictionary
NL., fr. Gr. a bellows + to close
Bony fishes without air passage to the swimming bladder (Physoclisti); 26.
"The History of Creation, Vol. II (of 2)" by Ernst Haeckel