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

Not known or apprehended by consciousness; resulting from neural activity of which a person is not aware; as, an unconscious movement; unconscious cerebration.

Usually the unconscious; that part of the mind in which mental processes occur that are not accesible to the awareness, but may significantly influence behavior.

That part of the psyche which does not, except under unusual circumstances, intrude into awareness.