somnambulation Meaning, Definition & Usage

  1. noun walking by a person who is asleep
    noctambulism; noctambulation; sleepwalking; somnambulism.

WordNet

Som*nam`bu*la"tion noun
Etymology
L. somnus sleep + ambulatio a walking about, from ambulare to walk. See Somnolent, Amble.
Definitions
  1. The act of walking in sleep.

Webster 1913