Reduce/rɪˈduːs/ Definition 1 of 5Pro Tip 1/3Physical reduction Used when talking about decreasing the physical size, amount, or number of tangible items. To save space, companies reduce packaging sizes. Pro Tip 2/3Quantity over time Emphasizes a gradual decrease in quantity or intensity over a period of time. We need to reduce energy consumption gradually. Pro Tip 3/3Not elimination Reduce means to lessen, not completely eliminate something. The doctor recommended reducing sugar, not cutting it out entirely.