degradation
https://gyazo.com/7ecd813c51844ce631e20fdd9713d27a
source: Land degradation and water shortages threaten global food production – UN | UN News
land degradation: 土壌劣化
degrade + -ation
the condition or process of degrading or being degraded : 劣化・低下のプロセスもしくはその状態。
(品位・価値などの)低下;堕落
格下げ, 降職, 免職
Geology the wearing down of rock by disintegration. : 崩壊によって岩が徐々に減っていくこと
(岩石などの)浸食(作用).
〘化〙 (化合物の)減成.
ORIGIN
mid 16th century: from Old French, or from ecclesiastical Latin degradatio(n-), from the verb degradare (see degrade).