nEndostyle(Zoöl) A fold of the endoderm, which projects into the blood cavity of ascidians. See Tunicata.
Century Dictionary and Cyclopedia
nendostyleA longitudinal fold or diverticulum of the middle of the hemal wall of the pharynx of an ascidian, which projects as a vertical ridge into the hemal sinus contained between the endoderm and ectoderm, but remains in free communication with the pharynx by a cleft upon its neural side. From one point of view it appears deceptively as a hollow rod, whence the name. Huxley. See cuts Under Doliolidæ and Tunicata.