1. reaction formation (psychiatry) a defense mechanism in which a person unconsciously develops attitudes and behavior that are the opposite of unacceptable repressed desires and impulses and serve to conceal them
  2. radiation pyrometer a pyrometer for estimating the temperature of distant sources of heat; radiation is focussed on a thermojunction connected in circuit with a galvanometer
  3. connotation an idea that is implied or suggested
  4. reaction propulsion propulsion that results from the ejection at high velocity of a mass of gas to which the vehicle reacts with an equal and opposite momentum
  5. repatriation the act of returning to one's country of origin
  6. repetition the act of doing or performing again
  7. conditioned emotion an emotional response that has been acquired by conditioning
  8. radiation pattern graphical representation (in polar or Cartesian coordinates) of the spatial distribution of radiation from an antenna as a function of angle
  9. rotary motion the act of rotating as if on an axis
  10. population profile a chart showing the number of people as a function of their ages
  11. reputation the general estimation that the public has for a person
  12. reinterpretation a new or different reading
  13. radiation pressure the minute pressure exerted on a surface normal to the direction of propagation of a wave
  14. rehabilitation program a program for restoring someone to good health
  15. gestation period the period during which an embryo develops
  16. heat of formation the heat evolved or absorbed during the formation of one mole of a substance from its component elements
  17. sales promotion promotion that supplements or coordinates advertising
  18. trepidation a feeling of alarm or dread
  19. disinformation misinformation that is deliberately disseminated in order to influence or confuse rivals (foreign enemies or business competitors etc.)
  20. information knowledge acquired through study or experience