1. reductio ad absurdum (reduction to the absurd) a disproof by showing that the consequences of the proposition are absurd; or a proof of a proposition by showing that its negation leads to a contradiction
  2. reductivism an art movement in sculpture and painting that began in the 1950s and emphasized extreme simplification of form and color
  3. reductionism a theory that all complex systems can be completely understood in terms of their components
  4. theater of the absurd plays stressing the irrational or illogical aspects of life, usually to show that modern life is pointless
  5. radioactive dust the radioactive particles that settle to the ground after a nuclear explosion
  6. reductionist of a theory explaining complex things by simpler elements
  7. radioactive waste useless radioactive materials that are left after some laboratory or commercial process is completed
  8. reproductive system organs and tissues involved in the production and maturation of gametes and in their union and subsequent development as offspring
  9. reduction division (genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants)
  10. eutectoid steel a steel that contains 0.9% carbon
  11. reductase an enzyme that catalyses the biochemical reduction of some specified substance
  12. reduction gear gearing that reduces an input speed to a slower output speed
  13. corrugated board cardboard with corrugations
  14. red-coated used of British soldiers during the American Revolutionary War because of their red coats
  15. the absurd a situation in which life seems irrational and meaningless
  16. Edwin DuBois Hayward United States writer (1885-1940)
  17. cracked-wheat bread bread made with cracked wheat that has been ground fine
  18. reductant a substance capable of bringing about the reduction of another substance as it itself is oxidized; used in photography to lessen the density of a negative or print by oxidizing some of the loose silver
  19. product research marketing research that yields information about desired characteristics of the product or service
  20. redactor someone who puts text into appropriate form for publication

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