The Collaborative International Dictionary
Nucleobranch
Nucleobranch \Nu"cle*o*branch\, a. (Zo["o]l.) Belonging to the Nucleobranchiata. -- n. One of the Nucleobranchiata.
Wiktionary
nucleobranch
a. (context zoology English) Belonging to the Nucleobranchiata. n. One of the Nucleobranchiata.