unconsciousness

un·con·scious·ness (n-knshs-ns)

n.

A state of impaired consciousness in which one shows no responsiveness to environmental stimuli but may respond to deep pain with involuntary movements.

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unconsciousness

an abnormal state of lack of response to sensory stimuli, resulting from injury, illness, shock or some other bodily disorder. A brief loss of unconsciousness from which the animal recovers spontaneously or with slight aid is called fainting. Deep, prolonged unconsciousness is known as coma. See also levels of consciousness.