柯林斯词典dementia /dɪˈmɛnʃə/ (dementias) 1. N-VAR Dementia is a serious illness of the mind. 痴呆[医学] ...a treatment for mental conditions such as dementia and Alzheimer's disease. …对诸如痴呆和阿尔茨海默氏病等精神疾病的一种疗法。 返回 dementia剑桥词典a medical condition that affects especially old people , causing the memory and other mental abilities to gradually become worse , and leading to confused behaviour （尤指老年性）痴呆 The most common form of dementia is Alzheimer's disease . 最常见的痴呆病是阿尔茨海默氏症。 返回 dementia