Demyelinating disease. A demyelinating disease is any disease of the nervous system in which the myelin sheath of neurons is damaged. This damage impairs the conduction of signals in the affected nerves. In turn, the reduction in conduction ability causes deficiency in sensation, movement, cognition, or other functions depending on which nerves are involved.
For other uses, see Reamer (disambiguation). A reamer is a type of rotary cutting tool used in metalworking. Precision reamers are designed to enlarge the size of a previously formed hole by a small amount but with a high degree of accuracy to leave smooth sides.
a pipe reamer. 3. a kitchen utensil for extracting and collecting juice from fruits, having a deep saucerlike base and in the center a grooved cone on which the fruit half is pressed down by hand. 4. Dentistry. a drill with a spiral blade, for enlarging root canals.