from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. See sleepwalking.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. sleepwalking

from the GNU version of the Collaborative International Dictionary of English

  • n. 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.

from The Century Dictionary and Cyclopedia

  • n. The act of walking about, with the performance of apparently purposive acts, while in a state intermediate between sleep and waking.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. walking by a person who is asleep


from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin somnus ("sleep") and ambulāre ("to walk"), with the -ism suffix from Ancient Greek -ισμός, through Latin -ismus.



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