pneumatic duct

noun

1. the duct joining the air bladder and alimentary canal of a physostomous fish.

Example Sentences

The absence of a pneumatic duct in the Physoclisti would appear to be due to a post-larval atrophy.

From Project Gutenberg

In every modern Dipnoan, Crossopterygian, and Ganoid the air-bladder has an effective pneumatic duct.

From Project Gutenberg

He also believed that certain species produced a noise by forcing the gas from the air-bladder through a pneumatic duct.

From Project Gutenberg