1. Alexander Melville Bell a phonetician and father of Alexander Graham Bell
  2. exterminable capable of being totally destroyed or wiped out
  3. extremely to the greatest possible degree
  4. external angle the supplement of an interior angle of a polygon
  5. extremely high frequency 30 to 300 gigahertz
  6. extractable capable of being extracted
  7. extracellular located or occurring outside a cell or cells
  8. extremely low frequency below 3 kilohertz
  9. extricable capable of being extricated
  10. extrapolate draw from specific cases for more general cases
  11. external gill occurs in some mollusks and in tadpoles and other immature amphibians
  12. extractible capable of being extracted
  13. extramarital characterized by adultery
  14. extravagant recklessly wasteful
  15. extramural carried on outside the bounds of an institution or community
  16. invaluable having incalculable monetary or intellectual worth
  17. extralegal not regulated or sanctioned by law
  18. inexterminable incapable of extermination or extirpation
  19. order Malvales Malvaceae
  20. extravagance the quality of exceeding appropriate limits