The Collaborative International Dictionary
Abdominalia
Abdominalia \Ab*dom`i*na"li*a\, n. pl. [NL., neut. pl.] (Zo["o]l.) A group of cirripeds having abdominal appendages.
Wiktionary
abdominalia
n. (context zoology English) A group of cirriped crustaceans having abdominal appendages.