• WordNet 3.6
    • n somnambulism walking by a person who is asleep
    • ***
Webster's Revised Unabridged Dictionary
    • n Somnambulism A condition of the nervous system in which an individual during sleep performs actions appropriate to the waking state; a state of sleep in which some of the senses and voluntary powers are partially awake; noctambulism.
    • ***
Century Dictionary and Cyclopedia
    • n somnambulism The act of walking about, with the performance of apparently purposive acts, while in a state intermediate between sleep and waking. The sleeping condition is shown by the absence of the usual reaction to sense-impressions, and nsually by the failure to recall what has been done during the somnambulistic period. With many recent writers, however, the word is used, quite independently of any consideration of movements which the somnambulist may or does execute, as nearly synonymous with trance, mesmerization, or hypnotism, and exactly so with somnolism. It is generally considered under the two main conditions of the idiopathic, spontaneous, or self-induced and the artificial or induced. Compare somnolism. Also called, rarely, noctambulism.
    • ***
Chambers's Twentieth Century Dictionary
    • ns Somnambulism act or practice of walking in sleep
    • ***


Webster's Revised Unabridged Dictionary
Cf. F. somnambulisme,. See Somnambulation
Chambers's Twentieth Century Dictionary
L. somnus, sleep, ambulāre, -ātum, to walk.


In literature:

Let us add sincerely that we have no right to appeal to him in regard to modern somnambulism.
"Biographies of Distinguished Scientific Men" by Francois Arago
The somnambulism of Lady Macbeth is such a condition.
"Shakespearean Tragedy" by A. C. Bradley
An extraordinary story, some say the recital of a dream, or scenes in somnambulism, is that of Andrew Waples, of Horntown, Va.
"Tales of the Chesapeake" by George Alfred Townsend
The third stage is that of somnambulism.
"Moral Principles and Medical Practice" by Charles Coppens
There is also a lighter phase than somnambulism, that is called fascination.
"Complete Hypnotism: Mesmerism, Mind-Reading and Spiritualism" by A. Alpheus
Somnambulism is, with Luther, the result of diabolical agency.
"German Culture Past and Present" by Ernest Belfort Bax
It is claimed by some that somnambulism is one phase of the hypnotic condition.
"The Wonder Island Boys: Treasures of the Island" by Roger Thompson Finlay
The records of somnambulism contain no story of a person who despatched telegrams while walking in his sleep.
"The Mark Of Cain" by Andrew Lang
But somnambulism, while arising in sleep, is not at all a feature of sleep.
"Psychotherapy" by Hugo Münsterberg
They were catalepsy, lethargy, and somnambulism.
"Three Thousand Years of Mental Healing" by George Barton Cutten

In news:

Here is nothing discreet about the charms of Isabella Rossellini, who strolls through her memoir, "Some of Me," with a placidity nearing sweet somnambulance.
Joseph Fiennes' somnambulant FBI agent Mark Benford on FlashForward needs a wake-up call or a new job.
The prescribing information for Ambien lists somnambulism as a "rare side" effect, meaning that it has been reported in fewer than one in 1,000 patients.
While watching the usual commericals about products that will give you a good night of sleep, I noticed one had a warning about somnambulism, better known as sleepwalking .
'Sleepwalk with Me' is comic Mike Birbiglia's funny- ish personal story about somnambulating through life.
He's not up to his usual apoplexy, but next to the somnambulant Jones, anyone would seem like they were.
Thanks to his sleepwalking — the glum inertia of his days and the literal somnambulance of his nights — the wrong dreams are coming true.