1
a diminution in/of sth
常用结构，表示某方面的减少。
There has been a diminution in the number of students.
学生人数有所减少。
减值
先理解核心含义，再看它在真实句子里的用法。
减值
the statement of a theme in notes of lesser duration, usually half the original length
There has been a diminution in the number of students.
学生人数有所减少。
音乐术语
减少,降低或缩减
A lessening, decrease or reduction.
使变小的行为或过程
The act or process of making diminutive.
一种作曲技巧,通过缩短音符时值来缩短旋律
a compositional technique where the composer shortens the melody by shortening its note values.
In the final variation, the composer uses diminution to present the main idea in notes of half the length.
在最后的变奏中，作曲家运用减时法，以一半时长的音符呈现主题。
The music class studied how diminution transforms a slow theme into a fast one.
音乐课学习了减时法如何将慢速主题转变为快速主题。
Diminution can make a familiar melody sound more lively and energetic.
减时法能让熟悉的旋律听上去更活泼、更有活力。
常用结构，表示某方面的减少。
There has been a diminution in the number of students.
学生人数有所减少。
不可数用法，强调减少的过程或状态。
The diminution of natural resources is a global concern.
自然资源的减少是全球关注的问题。
音乐术语，指主题音符时值减半。
The composer used a diminution of the main theme in the finale.
作曲家在终曲中使用了主旋律的时值缩小。
Not this
The noise diminutioned gradually.
Use this
The noise diminished gradually.
diminution 是名词，不能用作动词。表达减少应使用动词 diminish。
Not this
There was diminution in temperature.
Use this
There was a diminution in temperature.
diminution 是可数名词，表示“减少”时前面需要加冠词 a。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
价值减少
The court awarded compensation for the diminution in value of the property.
法院对财产价值的减少给予了赔偿。
逐渐减少
The gradual diminution of the forest area worries environmentalists.
森林面积的逐渐减少令环保人士担忧。
资源减少
A diminution of resources could slow the research program.
资源的减少可能会减慢研究项目的进度。
略微减少
There was a slight diminution in sales after the price increase.
价格上涨后，销售额略有减少。
权利缩减
Citizens protested against any diminution of their rights.
公民抗议任何对他们权利的缩减。
Use diminution naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
词中藏着mini“小”，联想东西变小就是减少；音乐里则指把音符时值缩短变小。
语域：formal 常见场景：正式书面语/学术写作、法律或合同文本、音乐理论 该词多用于正式语域，日常口语中较少见。一般语境中表示“减少、缩小”，在法律/合同文本中常指权利或价值的减损；在音乐理论中则特指将主题音符的时值缩短。日常交流中更常用 decrease 或 reduction。
这些以 -ution 结尾的词都含 /ʃən/，重读元音之后的 /uːʃən/ 与 diminution 押韵，但中间辅音不同（如 solution 的 /l/ 与 execution 的 /kj/）。注意不要与拼写近似的 dimension /dɪˈmɛnʃən/（维度）混淆，diminution 的重音在 njuː 上。
Dictionary facts from ECDICT, WIKTIONARY.