\In`ner*va"tion\, n. [Cf. F. innervation.]
1. The act of innerving or stimulating.
2. (Physiol.) Special activity excited in any part of the
   nervous system or in any organ of sense or motion; the
   nervous influence necessary for the maintenance of
   life,and the functions of the various organs.
3. (Anat.) The distribution of nerves in an animal, or to any
   of its parts.