"a wasting away through lack of nourishment," 1620s (atrophied is from 1590s), from French atrophie, from Late Latin atrophia, from Greek atrophia "a wasting away," noun of state from atrophos "ill-fed, un-nourished," from a- "not" + trophe "nourishment," from trephein "to fatten" (see -trophy).
1822 (implied in atrophied), from atrophy (n.). Related: Atrophying.
atrophy at·ro·phy (āt'rə-fē)
A wasting or decrease in the size of an organ or tissue, as from death and reabsorption of cells, diminished cellular proliferation, pressure, ischemia, malnutrition, decreased function, or hormonal changes. Also called atrophia. v. at·ro·phied, at·ro·phy·ing, at·ro·phies
To undergo atrophy.
Note: The term is also used in a more general way to refer to a wasting process: “Since he stopped playing, his piano skills have atrophied.”