1. school principal the educator who has executive authority for a school
  2. principal main or most important
  3. principle a basic generalization that is accepted as true
  4. legal principle a principle underlying the formulation of jurisprudence
  5. moral principle the principle that conduct should be moral
  6. vital principle a hypothetical force to which the functions and qualities peculiar to living things are sometimes ascribed
  7. basic principle principles from which other truths can be derived
  8. mass-action principle (neurology) the principle that the cortex of the brain operates as a coordinated system with large masses of neural tissue involved in all complex functioning
  9. Le Chatelier principle the principle that if any change is imposed on a system that is in equilibrium then the system tends to adjust to a new equilibrium counteracting the change
  10. judicial principle a principle underlying the formulation of jurisprudence
  11. exclusion principle no two electrons or protons or neutrons in a given system can be in states characterized by the same set of quantum numbers
  12. principally for the most part
  13. bitter principle any one of several hundred compounds having a bitter taste
  14. Ochotona princeps North American pika
  15. in principle with regard to fundamentals although not concerning details
  16. life principle a hypothetical force to which the functions and qualities peculiar to living things are sometimes ascribed
  17. reality principle the governing principle of the ego
  18. Sao Thome e Principe island nation in the South Atlantic off the west coast of Africa; achieved independence from Portugal in 1975; has enormous offshore oil reserves
  19. Sao Tome e Principe island nation in the South Atlantic off the west coast of Africa; achieved independence from Portugal in 1975; has enormous offshore oil reserves
  20. Le Chatelier's principle the principle that if any change is imposed on a system that is in equilibrium then the system tends to adjust to a new equilibrium counteracting the change

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