1. ipso facto by the fact itself
  2. piezo effect electricity produced by mechanical pressure on certain crystals (notably quartz or Rochelle salt); alternatively, electrostatic stress produces a change in the linear dimensions of the crystal
  3. ex post facto affecting things past
  4. Pacific cod closely related to Atlantic cod
  5. in fact in reality or actuality
  6. abstract existing only in the mind
  7. specific heat the heat required to raise the temperature of one gram of a substance one degree centigrade
  8. opacification the process of becoming cloudy or opaque
  9. absorbate a material that has been or is capable of being absorbed
  10. disaffect arouse hostility or indifference in where there had formerly been love, affection, or friendliness
  11. artefact a man-made object taken as a whole
  12. artifact a man-made object
  13. benefact help as a benefactor
  14. perfecta a bet that you can pick the first and second finishers in the right order
  15. ipse dixit an unsupported dogmatic assertion
  16. perfect being complete of its kind and without defect or blemish
  17. prefect a chief officer or chief magistrate
  18. upstart a person who has suddenly risen to a higher economic status
  19. upstate in or toward the northern parts of a state
  20. infect contaminate with a disease

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