1. displacement reaction (chemistry) a reaction in which an elementary substance displaces and sets free a constituent element from a compound
  2. double replacement reaction a chemical reaction between two compounds where the positive ion of one compound is exchanged with the positive ion of another compound
  3. displacement the act of moving something from its natural environment
  4. displacement unit a unit of measurement of volume or capacity
  5. supplementation the act of supplementing
  6. complacent contented to a fault with oneself or one's actions
  7. muscular contraction a shortening or tensing of a part or organ
  8. displaced fracture fracture in which the two ends of the broken bone are separated from one another
  9. distraction drawing someone's attention away from something
  10. placentation the formation of the placenta in the uterus
  11. muscle contraction a shortening or tensing of a part or organ
  12. displaced person a person forced to flee from home or country
  13. Wasserman reaction a blood test to detect syphilis
  14. complementary color either one of two chromatic colors that when mixed together give white (in the case of lights) or grey (in the case of pigments)
  15. misplacement faulty position
  16. decomposition reaction (chemistry) separation of a substance into two or more substances that may differ from each other and from the original substance
  17. decimal fraction a proper fraction whose denominator is a power of 10
  18. abstraction the process of formulating general concepts
  19. destruction an event that completely ruins something
  20. double refraction splitting a ray into two parallel rays polarized perpendicularly