Substantiation
Pronunciation : Sub*stan`ti*a"tion
Part of Speech : n.
Definition : Defn: The act of substantiating or proving; evidence; proof.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder