An outward turning or eversion of the edge of the eyelid, exposing the inner surface.
From Greek 'cheilos' (lip, edge) + 'ektrope' (a turning out). The prefix 'chil-' relates to lip-like structures in medical terminology; '-tropia' or '-tropion' means turning, used in medical conditions describing abnormal positioning of eye structures.
This medical condition shows how Greek medical terminology creates precise descriptions—'chilectropion' tells doctors exactly which part (the eyelid edge) turns outward, making it immediately clear and universally understood across languages by healthcare professionals worldwide.
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