The act or condition of turning something inside out or turning it outward, especially in medical contexts.
From Latin 'eversio' (an overturning), from 'evertere' (to overturn). The English term became standard in medical vocabulary by the 1700s.
Doctors use 'eversion' to describe what happens when you flip your eyelid, but the same word describes what happens during certain surgeries—it's a single word covering everything from innocent eye-flipping to serious surgical procedures.
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