the GNU version of the Collaborative International Dictionary of English
n. The quality of being valuable.
The Century Dictionary and Cyclopedia
n. The character of being valuable; preciousness; worth.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the positive quality of being precious and beyond value
Word Usage
"They hold that there is such a thing as objective valuableness; namely, that which a rational person, acting consistently and within the confines of the facts, would value."