siˈphunculated,a.Zool. [Cf.prec.] Possessing or furnished with a siphuncle. 1828–32in Webster (citing Say).1851Mantell Petrifactions v. §5. 459 The Phragmocone, or chambered, siphunculated, internal shell.1877Huxley Anat.Inv.Anim. viii. 532 The Tetrabranchiata possess an external chambered siphunculated shell.