The New Dictionary of Cultural Literacy, Third Edition. 2002.
subconsciousness
The part of the psyche just below consciousness and capable of bursting into consciousness. For example, a repressed sexual desire is part of our subconsciousness, although we may at some time become conscious of it.
The subconscious is not the same as the unconscious. Blinking, for example, is usually unconscious and occasionally conscious, but never subconscious.