atrophy
词根词缀：
atrophy n. 萎缩
a 无 + troph 营养 + y 表名词 → 失去营养 →〔肌肉等〕萎缩
dystrophy n. 营养不良
dys 不良 + troph 营养 + y 表名词 → 营养不良
eutrophic adj. 营养良好的
eu 好 + troph 营养 + ic 某种药 → 营养良好的
trophic adj. 营养的
troph 营养 + ic 某种药 → 营养的
trophology n. 营养学
troph 营养 + ology …学 → 营养学
数据来源：新东方英语词汇速记大全
相关例句：
In patients with mci, researchers identified regions of brain atrophy and increased water content in white-matter areas.
研究人员找到了mci病人脑萎缩的区域，发现白质区的水容量增加。
If you allow your mind to stagnate, this particular talent will atrophy
如果你老不用脑，那么这一特殊才能就会退化。
Scott's muscle atrophied, his leg became stunted, and he was left lame
斯科特的肌肉萎缩，一条腿发育不完全，成了个瘸子。
Analysis of external anal sphincter electromyography and autonomic nervous dysfunction in patients with Parkinson's disease and multiple system atrophy
帕金森病和多系统萎缩患者的肛门括约肌肌电图与自主神经功能障碍分析
Striated muscle cells became degeneration, swelling and atrophy.
横纹肌纤维变性、肿胀，细胞萎缩。
Female patients can be accompanied by vaginal dryness, burning, genital atrophy.
女性患者还可伴有阴道干燥，烧灼感，外阴萎缩。