Stems #9

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Across
  1. 2. psychiatry, psychopath, physical
  2. 3. philanthropy, philharmonic
  3. 4. decimal, decade, decathlon
  4. 5. primitive, prime
  5. 8. astronaut, astrology
  6. 10. vitamin, vital, vivacious
  7. 11. quadrant
Down
  1. 1. megaphone, telephone, phonetic
  2. 4. dual, duel, duplex
  3. 6. minus, minimum, minority
  4. 7. geology, geometry
  5. 9. thermometer, thermosphere
  6. 12. united, united, unicorn