1. sound reflection the repetition of a sound resulting from reflection of the sound waves
  2. interreflection reciprocal reflection between two reflecting surfaces
  3. wind deflection the deflection of a projectile resulting from the effects of wind
  4. reflection the phenomenon of a propagating wave being thrown back
  5. centrifugation the process of separating substances of different densities by the use of a centrifuge
  6. underevaluation an appraisal that underestimates the value of something
  7. undervaluation too low a value or price assigned to something
  8. retroflection the act of bending backward
  9. sound reproduction the reproduction of sound
  10. counterrevolution a revolution whose aim is to reverse the changes introduced by a previous revolution
  11. sound projection the acoustic phenomenon that gives sound a penetrating quality
  12. gentrification the restoration of run-down urban areas by the middle class
  13. introspection contemplation of your own thoughts and desires and conduct
  14. sound pollution annoying and potentially harmful environmental noise
  15. inflection the patterns of stress and intonation in a language
  16. deflection a turning aside (of your course or attention or concern)
  17. contradiction opposition between two conflicting forces or ideas
  18. nitrification the chemical process in which a nitro group is added to an organic compound (or substituted for another group in an organic compound)
  19. putrefaction the process of decay caused by bacterial or fungal action
  20. dereliction willful negligence

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