n 1  :  the totality in psychology of sensations, perceptions, ideas, attitudes, and feelings of which an individual or a group is aware at any given time or within a given time span <altered states of , such as sleep, dreaming and hypnosis -Bob Gaines>   2  :  waking life (as that to which one returns after sleep, trance, or fever) in which one's normal mental powers are present <the ether wore off and the patient regained >   3  :  the upper part of mental life of which the person is aware as contrasted with unconscious processes .
 
 
 
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