Physostomi \Phy*sos"to*mi\ (f[i^]*s[o^]s"t[-o]*m[imac]), prop.
n. pl. [NL., fr. Gr. fy^sa a bellows + sto`ma 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.
[1913 Webster]