is the process of lowering, degrading, or diminishing.
or '''reducing''' may also refer to:
- Reduction (mathematics) , the process of manipulating a series of equations or matrices into a desired 'simpler' format
- Reduction (complexity) , in computational complexity theory, the transformation of an instance of one problem into an instance of another
- Reduction (cooking) , the process of thickening a liquid mixture such as a sauce by evaporation
- Reduction, in Redox chemistry, is the reverse of oxidation
- Reduction (philosophy) , in philosophy, the process of explaining a particular phenomenon in terms of more fundamental concepts
- Purchasing Reduction , in economics and in waste management, the process of decreasing the purchase of consumer goods
- Reduction Property , in descriptive set theory, a pointclass allows partitioning the union of two sets in the pointclass into two disjoint sets in the same pointclass
- Reduction, in pottery, the process of limiting the amount of oxygen available to support combustion in a Kiln , thereby changing the appearance of the glazes on the finished ware
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