The Collaborative International Dictionary
Tracheobranchia
Tracheobranchia \Tra`che*o*bran"chi*a\, n.; pl. Tracheobranchlae. [NL. See Trachea, and Branchia.] (Zo["o]l.) One of the gill-like breathing organs of certain aquatic insect larv[ae]. They contain tracheal tubes somewhat similar to those of other insects.