The process or act of awakening, arousing, or stimulating mental alertness.
From Latin 'expergefactio,' derived from 'expergefacere.' The '-tion' suffix (from Latin '-tio') creates a noun of action describing the process of arousing or awakening.
This noun form describes the actual process of waking something up—in medieval medical thinking, 'expergefaction' was literally what happened when a stimulating substance made you alert. It's a window into how physicians centuries ago thought about consciousness.
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