ORAC
/ (ˈɔːræk) /
n acronym for
Oxygen Radical Absorbance Capacity: a measure of the ability of a substance, esp the blood, to absorb free radicals, used in determining the antioxidant effects of foods
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Example sentences from the Web for orac
As Orac notes, it is a very least a failure of due diligence.