consciousness UK /ˈkɒnʃəsnəs/US /ˈkɑnʃəsnəs/ noun5 •the working state of the mind in which a person notices the world and their own thoughts •The state or trait of having cognition and sensation; cognition and sensation themselves.Consciousness is universal and precedes even the formation of our solar system. — 1981 •A being with cognition. •The fact of having knowledge of a particular fact or matter; cognizance. •Acute awareness (of something) and belief in its communal relevance. formsconsciousnesses