definer

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Across
  1. 3. an estimate
  2. 6. shining in the dark
  3. 7. based on a hypothesis
  4. 9. opposite or contrary
  5. 11. very small human
  6. 13. rapid movement of the eyes
  7. 14. create or devise methodically
  8. 15. insignificant
  9. 18. tie with rope to restrict movement
  10. 19. sample for scientific trial
Down
  1. 1. member of religious orders
  2. 2. expert or student of logic
  3. 4. a game played on a billiard table
  4. 5. a mental disorder
  5. 8. an opening or gap
  6. 10. unpleasant/mad
  7. 12. map formed by a projection of a sphere
  8. 16. to feel excited
  9. 17. awake at night