1. J. B. S. Haldane Scottish geneticist (son of John Haldane) who contributed to the development of population genetics; a popularizer of science and a Marxist (1892-1964)
  2. obsolete no longer in use
  3. E. T. S. Walton Irish physicist who first split an atom
  4. absolutely totally and definitely; without question
  5. absolute perfect or complete or pure
  6. abyssal zone the deep sea (2000 meters or more) where there is no light
  7. absolution the act of being formally forgiven
  8. Abies lowiana medium to tall fir of central to western United States having a narrow erect crown and soft wood
  9. aposelene apoapsis in orbit around the moon
  10. epsilon the 5th letter of the Greek alphabet
  11. John Haldane Scottish physiologist and brother of Richard Haldane and Elizabeth Haldane; noted for research into industrial diseases (1860-1936)
  12. absoluteness the quality of being absolute
  13. obsoleteness the property of being out of date and not current
  14. upsilon the 20th letter of the Greek alphabet
  15. John Scott Haldane Scottish physiologist and brother of Richard Haldane and Elizabeth Haldane; noted for research into industrial diseases (1860-1936)
  16. Elizabeth Haldane Scottish writer and sister of Richard Haldane and John Haldane (1862-1937)
  17. absolute value a real number regardless of its sign
  18. absolve grant remission of a sin to
  19. Jacob's ladder pinnate-leaved European perennial having bright blue or white flowers
  20. James Baldwin United States author who was an outspoken critic of racism