cerebrospinal fluid fistula one between the subarachnoid space and a body cavity, such as from head trauma or bone erosion, with leakage of cerebrospinal fluid, usually in the form of rhinorrhea or otorrhea. complete fistula one extending from the skin to an internal body cavity.
Freebase(0.00 / 0 votes)Rate this definition: Vermiform. Vermiform means something shaped like a worm. The expression is often employed in biology and anatomy to describe more or less tubular or cylindrical, usually soft body parts or animals. The word root is Latin, vermes-worms and formes-shaped.
In humans, the vermiform appendix is a small, finger-sized structure, found at the end of our small caecum and located near the beginning of the large intestine (Fawcett and Raviola 1994, p. 636; Oxford Companion to the Body 2001, pp. 42-43; Williams and Myers 1994).