【医】 protocoelomata
former; original
【化】 ortho-
【医】 arch-; arche-; ortho-; pro-; prot-; proto-
【医】 body cavity; celom; coelom; coeloma; coelomic cavity; coelomic sac
hemal cavity; somatic cavity; splanchnocoele; syncelom; syncoelom
animal; creature
【医】 animal; animal life; zoa; Zoo-