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The Collaborative International Dictionary
Unconsciousness

Unconscious \Un*con"scious\, a.

  1. Not conscious; having no consciousness or power of mental perception; without cerebral appreciation; hence, not knowing or regarding; ignorant; as, an unconscious man.
    --Cowper.

  2. Not known or apprehended by consciousness; as, an unconscious cerebration. ``Unconscious causes.''
    --Blackmore.

  3. Having no knowledge by experience; -- followed by of; as, a mule unconscious of the yoke.
    --Pope. [1913 Webster] -- Un*con"scious-ly, adv. -- Un*con"scious*ness, n.

Wiktionary
unconsciousness

n. 1 The state of lacking consciousness, of being unconscious 2 ignorance or innocence; the state of being uninformed or unaware

WordNet
unconsciousness

n. a state lacking normal awareness of the self or environment [ant: consciousness]

Wikipedia
Unconsciousness

Unconsciousness is a state which occurs when the ability to maintain an awareness of self and environment is lost. It involves a complete or near-complete lack of responsiveness to people and other environmental stimuli.

Loss of consciousness should not be confused with the notion of the psychoanalytic unconscious or cognitive processes (e.g., implicit cognition) that take place outside awareness, and with altered states of consciousness, such as delirium (when the person is confused and only partially responsive to the environment), normal sleep, hypnosis, and other altered states in which the person responds to stimuli.

Unconsciousness may occur as the result of traumatic brain injury, brain hypoxia (e.g., due to a brain infarction or cardiac arrest), severe poisoning with drugs that depress the activity of the central nervous system (e.g., alcohol and other hypnotic or sedative drugs), severe fatigue, anaesthesia, and other causes.

There is a theory that unconsciousness occurs when different regions of the brain inhibit one another.

Usage examples of "unconsciousness".

It was a futile question, because Brit was already going off into unconsciousness.

In his introduction the experimenter seems to assert in the most distinct and emphatic way the complete unconsciousness of each victim.

She knew that drowsiness was a companion of hypothermia, that dozing off would invite deeper unconsciousness and ultimately death.

Jenny, with Melia, Eliza, and Charlotte, did what they could for the exhausted Dorcas but she was heartbroken by the loss of her child, and despite all their attempts to console her she slipped into unconsciousness from which it was impossible to rouse her.

Yet there were no marks of injury upon the body, nothing to show how sufficient unconsciousness had been produced in the victim to permit of the miscreant completing his awesome deed.

The sea monody melted in its turn into the waltz strains rippling from the piano standing in the old drawing-room at Kensington, and Bob pulled his wits together just in time to save himself from falling into the unconsciousness which had already mercifully enwrapped the old man.

The burly Hugh outwrestled his man and bashed him a few times till he lapsed into unconsciousness.

Caine and Talann and the amateur surgeon from the Subjects of Cant had taken advantage of his unconsciousness to unstitch his thigh and wash the insect eggs from the wound with the strongest brandy they could find, then resewed it and stitched together the deep slash across his abdomen, as well.

But Simson, who turned with us, and who had gone along all this time with his taper flaring, in entire unconsciousness, came to himself, apparently at the sound of our voices, and put out that wild little torch with a quick movement, as if of shame.

Don Tarquinio looked on with a surprised interest that evanesced into elaborate unconsciousness when he was appealed to by Egbert to come and drink up some of the spilt matter.

On a human, a single stunner blast caused about six hours of unconsciousness followed by a vicious bitch of a headache, but it did no true physical damage.

To make no record of these notable adventures were crime indeed, one that would condemn us to the vast unconsciousness of unrecorded life in which most people live out their lives.

Maggie, unresentful of the spattering, and wiping off the water with apparent unconsciousness.

Eisean had lapsed into a deep and unrousable state of unconsciousness, his pallor drained to the unnatural, ghastly tone of one hovering near death.

There would seem to be other evidence of the most convincing character, that some of the animals thus subjected for hours to the stimulation of nerves and to the most frightful mutilations were not at all times in such state of unconsciousness as to prevent the occurrence of one most significant indication of pain.