Definify.com
Webster 1913 Edition
Physostomi
‖
Phy-sos′to-mi
(fĭ-sŏs′tō̍-mī)
, p
rop.
Noun.
pl.
[NL., fr. Gr.
φῦσα
a bellows + στόμα
mouth.] (Zool.)
An order of fishes in which the air bladder is provided with a duct, and the ventral fins, when present, are abdominal. It includes the salmons, herrings, carps, catfishes, and others.