Pterobranchia
plural noun
Ptero·bran·chia
ˌterəˈbraŋkēə
: an order of Hemichordata or an independent phylum of uncertain affinities that comprises two genera (Cephalodiscus and Rhabdopleura) of small deep-sea tube-dwelling animals that commonly reproduce by budding
Word History
Etymology
New Latin, from pter- + -branchia