1. a reduction in the size, extent, or importance of something

Examples

• The diminution of the company’s profits led to layoffs.
• There has been a noticeable diminution in air quality over the past decade.
• The treaty resulted in a diminution of the country’s military power.
• Age brought a gradual diminution of his hearing ability.
• The diminution of funding threatened the research program.
• She noticed a diminution in her energy levels after the illness.