1. disarm take away the weapons from; render harmless
  2. discern detect with the senses
  3. dessert a dish served as the last course of a meal
  4. desert leave someone who needs or counts on you; leave in the lurch
  5. disarray untidiness, especially of clothing and appearance
  6. diagram a drawing intended to explain how something works
  7. dismay the feeling of despair in the face of obstacles
  8. tessera a small square tile of stone or glass used in making mosaics
  9. deserve be worthy
  10. discerp cut off from a whole
  11. dosser someone who sleeps in any convenient place
  12. disparate fundamentally different or distinct in quality or kind
  13. disperse move away from each other
  14. decigram 1/10 gram
  15. digram two successive letters
  16. dissent a difference of opinion
  17. discourse an extended communication dealing with some particular topic
  18. disparage express a negative opinion of
  19. diorama a three-dimensional representation of a scene
  20. serum an amber, watery fluid, rich in proteins, that separates out when blood coagulates