Meaning

noun a written work (as a novel) that has been recast in a new form

noun the process of adapting to something (such as environmental conditions)

noun (physiology) the responsive adjustment of a sense organ (as the eye) to varying conditions (as of light)

originEtymology tree Proto-Indo-European *h₂éd Proto-Italic *ad Proto-Italic *ad- Medieval Latin ad- Proto-Italic *aptos Medieval Latin aptus Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-yéti Proto-Indo-European *-eh₂yéti Proto-Italic *-āō Medieval Latin -ō Medieval Latin apiō Proto-Indo-European *-tós Proto-Italic *-tos Medieval Latin -tus ▲ Medieval Latin -ō Medieval Latin…

Etymology from Wiktionary, CC BY-SA 3.0