The Collaborative International Dictionary of English v.0.48:
Subconsciousness \Sub*con"scious*ness\, n. The state or quality of being subconscious; a state of mind in which perception and other mental processes occur without distinct consciousness. [Webster 1913 Suppl.]WordNet (r) 3.0 (2006):
subconsciousness n 1: a state of mind not immediately available to consciousness