The Collaborative International Dictionary
Physostomous
Physostomous \Phy*sos"to*mous\, a. (Zo["o]l.)
Having a duct to the air bladder.
Pertaining to the Physostomi.
Wiktionary
physostomous
a. 1 (context zoology English) Having a duct to the air bladder. 2 (context zoology English) Relating to the Physostomi.