Source : Webster's Revised Unabridged Dictionary (1913)

Noctambulation \Noc*tam`bu*la"tion\, n. [L. nox, noctis, night +
   ambulare to walk: cf. F. noctambulation.]
   Somnambulism; walking in sleep. --Quain.

Source : WordNet®

noctambulation
     n : walking by a person who is asleep [syn: {sleepwalking}, {somnambulism},
          {somnambulation}, {noctambulism}]