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English word lichenification comes from English lichen, English -ification (The process of becoming.)
lichen (English)
(figurative) Something which spreads across something else, causing damage.. Any of many symbiotic organisms, being associations of fungi and algae; often found as white or yellow patches on old walls, etc.
-ification (English)
The process of becoming.
lichenification (English)
(dermatology) Epidermal thickening characterized by visible and palpable thickening of the skin with accentuated skin markings.