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.
Vorticella is a unicellular ciliated aquatic protist. Newly budded cells are free swimming, but in older organisms, the long stalk is usually attached to some sort of substrate such a plant detritus, rocks, or even animals such as crustaceans. During most of the life cycle, the cilia are localized to the âmouthâ of the cell (peristome).