Test Your Vocabulary

Take Our 10-Question Quiz

Get Our Free Apps
Voice Search, Favorites,
Word of the Day, and More
iPhone | iPad | Android | More
Join Us on FB & Twitter
Get the Word of the Day and More
Facebook | Twitter
  1. Quizzes & Games
  2. Word of the Day
  3. Video
  4. New Words
 

Words by Topic

Arts and Entertainment|Business and Finance|Education and Research|Government|Health and Fitness|History and Lit|Home and Garden|Medical|Science and Tech|Sports and Recreation|Travel

Featured Terms

  1. anthracite
  2. boulder
  3. cwm
  4. erratic
  5. igneous
  6. intrusive
  7. mesa
  8. sedimentary
  9. silt
  10. swale

GEOLOGY

All Terms

  1. riverbed
  2. riverine
  3. rivulet
  4. roche moutonnée
  5. rock
  6. rock hound
  7. rock oil
  8. rockfall
  9. rottenstone
  10. run
  11. runlet
  12. runnel
  13. runoff
  14. S wave
  15. saccharoidal
  16. saddle
  17. salic
  18. salt
  19. salt dome
  20. salt flat
  21. salt lake
  22. salt marsh
  23. salt pan
  24. salting
  25. sand
  26. sandbank
  27. sandbar
  28. sandstone
  29. saprolite
  30. sastruga
  31. savanna
  32. scabland
  33. scar
  34. scarp
  35. schist
  36. schistose
  37. schlieren
  38. scientist
  39. scoria
  40. scour
  41. scree
  42. sculpture
  43. sea
  44. seabed
  45. seafloor
  46. seafloor spreading
  47. seam
  48. seamount
  49. seaquake
  50. sediment