1. quasiparticle a quantum of energy (in a crystal lattice or other system) that has position and momentum and can in some respects be regarded as a particle
  2. beta particle a high-speed electron or positron emitted in the decay of a radioactive isotope
  3. feature article a special or prominent article in a newspaper or magazine
  4. K particle an unstable meson produced as the result of a high-energy particle collision
  5. quadratics a branch of algebra dealing with quadratic equations
  6. quadratic of or relating to the second power
  7. antiparticle a particle that has the same mass as another particle but has opposite values for its other properties; interaction of a particle and its antiparticle results in annihilation and the production of radiant energy
  8. toilet articles artifacts used in making your toilet
  9. cathartic emotionally purging
  10. review article an essay or article that gives a critical evaluation
  11. definite article a determiner that indicates specificity of reference
  12. auditory ossicle ossicles of the middle ear that transmit acoustic vibrations from the eardrum to the inner ear
  13. quotient verdict an improper and unacceptable kind of compromise verdict
  14. autocratically in an overbearingly domineering manner; as a dictator
  15. counterattack an attack by a defending force against an attacking enemy force in order to regain lost ground or cut off enemy advance units etc.
  16. meteoritical of or relating to or caused by meteorites
  17. acute triangle a triangle whose interior angles are all acute
  18. quarterdeck the stern area of a ship's upper deck
  19. mud turtle bottom-dwelling freshwater turtle inhabiting muddy rivers of North America and Central America
  20. heavy particle any of the elementary particles having a mass equal to or greater than that of a proton and that participate in strong interactions; a hadron with a baryon number of +1

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