1. paradox a statement that contradicts itself
  2. sporadic recurring in scattered or unpredictable instances
  3. beta particle a high-speed electron or positron emitted in the decay of a radioactive isotope
  4. Bos primigenius large recently extinct long-horned European wild ox
  5. 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
  6. beggar-ticks any of several plants of the genus Bidens having yellow flowers and prickly fruits that cling to fur and clothing
  7. supertax an additional tax on certain kinds of income that has already been taxed
  8. bowsprit a spar projecting from the bow of a vessel
  9. Pieris protodice common North American form of cabbage butterfly
  10. sporadically in an irregular or unpredictable manner
  11. psi particle a neutral meson with a large mass
  12. aspartic acid a crystalline amino acid found in proteins and occurring naturally in sugar beets and sugar cane
  13. protagonist the principal character in a work of fiction
  14. sport car a small low car with a high-powered engine
  15. Rubus fruticosus the true blackberry of Europe as well as any of numerous varieties having sweet edible black or dark purple berries
  16. bass part the lowest part in polyphonic music
  17. sybaritic displaying luxury and furnishing gratification to the senses
  18. quadratics a branch of algebra dealing with quadratic equations
  19. by-product a secondary and sometimes unexpected consequence
  20. byproduct a secondary and sometimes unexpected consequence

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