Definition of "testing" []

• Present participle of test. (verb)
• The act of conducting a test; trialing, proving (noun)

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• "Skin testing is used to confirm suspected allergens."
• "But such testing is only skin testing; it cannot guarantee if the inner part of the item is actually gold or of the same purity."
• "Alpha fetoprotein testing is best done 15 to 20 weeks into a pregnancy."