(mathematics, logic) The method of disproving a statement by assuming the statement is true and, with that assumption, arriving at a blatant contradiction.

plural of reductio ad absurdum

The (fallacious) conclusion that the fact that Adolf Hitler had a particular idea or quality is sufficient proof that the idea is wrong or the property is bad.

The act, process, or result of reducing. / The amount or rate by which something is reduced, e.g. in price.

(music) The pattern, as perceived, of tension and relaxation among events in various levels of structure, projected from time-span reduction.

The operation performed to reduce the volume of breast tissue.

(chemistry) Any reduction reaction that uses magnesium at an elevated temperature; used, for instance, to reduce the silica of diatoms to silicon whilst retaining the complex shapes.

(chemistry) Any reduction reaction that employs carbon at high temperatures

plural of reduction

(US, business, euphemistic) A layoff.