from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The property of two or more appearances of being of the selfsame underlying object; sameness as regards self or identity.
from The Century Dictionary and Cyclopedia
- n. The fact of being one and the same, or of being the very same self; sameness as regards self or identity.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the quality of being identical with itself
selfsame + -ness (Wiktionary)