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