reduction

sự giảm, mức giảm, tỷ lệ giảm

1. The act, process, or result of reducing.Hành động, quá trình hoặc kết quả của việc làm giảm.
2. The amount or rate by which something is reduced, e.g. in price.Số lượng hoặc tỷ lệ giảm đi, chẳng hạn về giá.
3. A reaction in which electrons are gained and valence is reduced; often by the removal of oxygen or the addition of hydrogen.
4. The process of rapidly boiling a sauce to concentrate it.
5. The rewriting of an expression into a simpler form.

• Spanish reductions in Mexico were common during the 18th century.