The Collaborative International Dictionary
Trichobranchia
Trichobranchia \Trich`o*bran"chi*a\, n. [NL., fr. Gr. tri`x, tricho`s, hair + branchia.] (Zo["o]l.) The gill of a crustacean in which the branchial filaments are slender and cylindrical, as in the crawfishes.
Wiktionary
trichobranchia
n. (context zoology English) The gill of a crustacean in which the branchial filaments are slender and cylindrical, as in the crawfishes.