Based on the wildly positive feedback from 75 words every sci-fi fan should know, we bring you an additional 25 more words every sci-fi fan should know. There, now you have your even 100.

  1. alternate history (n.)
  2. ansible (n.)
  3. Big Dumb Object (n.)
  4. con (n.)
  5. cyberpunk (adj.)
  6. fandom (n.)
  7. fanspeak (n.)
  8. fanzine (n.)
  9. filk (v.)
  10. grandfather paradox (n.)
  11. hyperspace (n.)
  12. rubber science (n.)
  13. scrith (n.)
  14. skiffy (adj.)
  15. slan (n.)
  16. soylent green (n.)
  17. space opera (n.)
  18. steampunk (adj.)
  19. suspended animation (n.)
  20. tachyon (n.)
  21. technobabble (n.)
  22. tesseract (n.)
  23. unobtainium (n.)
  24. wormhole (n.)
  25. zero-point energy (n.)

So, what’s still missing off the must-know list?