The activation of something previously inactive or inactivated.(noun)
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Use "reactivation" in a sentence
"I was on another blog where they provided scientific data that scent lok suits do not work wet and that the temperature necessary for reactivation is much higher than a household dryer could produce."
"The call for tolerance, to strip away pre-given assumptions and to make full disclosure by way of reactivation, is the very Logic we are now using."
"But the disease arises from the same conditions that cause cold sores: Either a new infection with herpes virus, or the sudden re-awakening - known as "reactivation" - of a herpes infection from where it lies dormant in nerve fibers near the spine."