"Premature degeneration of cells or tissue (now usually within the central nervous system), especially when hereditary or otherwise independent of external factors; an instance of this; any condition characterized by this", Early 20th cent.; earliest use found in William Richard Gowers (1845–1915), physician. From a- + Hellenistic Greek βιοτρόϕος life-sustaining (from ancient Greek βίο- + -τροϕος, combining form from an ablaut variant of the base of τρέϕειν to nourish: see tropho-) + -y. See quot. 1902.[abiotrophy etymology, abiotrophy origin, 英语词源]