dorsibranchiata

‖dor′si‐bran′chi‐a″ta (?), n. pl. [NL., from L. dorsum back + branchiae gills.] (Zoöl.) A division of chætopod annelids in which the branchiæ are along the back, on each side, or on the parapodia. [See Illusts. under Annelida and Chætopoda.]