Definition of "substantiation" [sub•stan•ti•a•tion]

• The act of substantiating (noun)
• Something which substantiates; evidence, proof (noun)

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• "I will be pleased to review any information which Mr. McMeans might directly provide in substantiation of your claimed SEAL service and to discuss your claimed credentials at length with him."
• "They took a step towards lifecycle analysis — the kinds of things you need to think about to make a very broad environmental claim, even knowing substantiation is difficult."
• "Mylanta Night Time Strength: first time a court adopted the FTC principle, for Lanham Act purposes, that lack of substantiation is equivalent to falsity."