Word · Frequency #7441
dementias
痴呆；失智症
dementias is the plural of dementia.
核心释义
Progressive decline in cognitive function caused by brain damage or disease, beyond normal aging.
- 1.
由于大脑损伤或疾病导致的认知功能逐渐下降,超出正常衰老预期。特别受影响的领域包括记忆、注意力、判断、语言和解决问题。
A progressive decline in cognitive function due to damage or disease in the brain beyond what might be expected from normal aging. Areas particularly affected include memory, attention, judgement, language and problem solving.
- 2.
器质性或功能性原因导致的精神衰退
mental deterioration of organic or functional origin
- 3.
疯狂或精神错乱。
Madness or insanity.
疯狂；精神错乱；由于大脑损伤或疾病导致的认知功能逐渐下降,超出正常衰老预期。特别受影响的领域包括记忆、注意力、判断、语言和解决问题。；器质性或功能性原因导致的精神衰退；疯狂或精神错乱。；痴呆；[医] 痴呆
用法In use
My grandfather was diagnosed with dementia last year, and now he sometimes forgets our names.
用法提示：dementia 在这里作名词，指‘痴呆症’，表示一种认知功能逐渐退化的疾病。
The doctor explained that dementia affects memory and judgment, not just old age.
用法提示：这里的 dementia 是名词，指‘痴呆症’，说明这种疾病对认知功能的影响。
She works in a nursing home and helps patients with dementia stay active.
用法提示：dementia 作名词，指‘痴呆症’，用来描述患者的疾病。
be diagnosed with dementia
常用于医学语境。
She was diagnosed with dementia at the age of 65.
她在65岁时被诊断出患有痴呆症。
develop dementia
强调疾病的发展过程。
相关词与表达Connections
搭配Collocations
- suffer from dementia
- 患痴呆症
- Many elderly people suffer from dementia.许多老年人患痴呆症。
- develop dementia
- 发展为痴呆
- He is at risk of developing dementia in his old age.他晚年有发展为痴呆的风险。
- early dementia
- 早期痴呆
- Early dementia can be difficult to diagnose.早期痴呆可能难以诊断。
- vascular dementia
- 血管性痴呆
- Vascular dementia is caused by reduced blood flow to the brain.血管性痴呆是由脑部血流量减少引起的。
- dementia patient
学习提示Learner notes
记忆技巧Memory Tip
想象'地门'（dementia）合上，心智陷入'痴呆'。
语境与语域Context & Register
常见场景：医学讨论、临床诊断、健康报道 通常用于医学或正式语境，在日常对话中较少使用。
语法说明Grammar Note
通常作不可数名词；表示不同类型的失智症/痴呆时可用复数 dementias。
发音与拼写Pronunciation & Spelling
Words ending in '-tia' (e.g., inertia) share the /ʃə/ sound but stress differs. Words like 'patience' (-tience) and 'partial' (-tial) have similar /ʃ/ but different endings. 'Amnesia' (-sia) ends in /ʒə/ not /ʃə/, so it is a lookalike.
用法优先级Usage priority
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
一起学习词形
Dictionary facts from ECDICT, WIKTIONARY.