| No. | Item | Definition |
|---|---|---|
| 1. | absorption | Water uptake of fired clay |
| 2. | anagama | Traditional single-chamber wood kiln |
| 3. | ash glaze | Glaze made with plant ash |
| 4. | ball clay | Very plastic secondary clay |
| 5. | bat | Removable wheelhead board |
| 6. | belly | Full rounded middle of vessel |
| 7. | bisque | Unglazed ware after first firing |
| 8. | blistering | Bubbles raised in glaze surface |
| 9. | bloating | Swelling from trapped gases |
| 10. | bone-dry | Completely dry before firing |
| 11. | burnishing | Polishing clay to a sheen |
| 12. | casting | Forming shapes in a mold |
| 13. | celadon | Translucent greenish glaze |
| 14. | clay | Natural earth used to make pottery |
| 15. | coil | Rope of clay for building |
| 16. | cone | Heatwork indicator used in kilns |
| 17. | crackle | Decorative network of glaze cracks |
| 18. | crawling | Glaze pulls away when firing |
| 19. | crazing | Fine cracks in glaze |
| 20. | damp box | Humid box keeping clay workable |
| 21. | damper | Device controlling kiln draft |
| 22. | deflocculant | Additive thinning a clay slurry |
| 23. | devitrification | Crystals forming in cooled glaze |
| 24. | draft | Airflow through a kiln |
| 25. | dunting | Cracking from thermal shock |
| 26. | earthenware | Porous low-fired ceramic ware |
| 27. | electric kiln | Kiln heated by electricity |
| 28. | engobe | Colored clay coating |
| 29. | extrusion | Forcing clay through a die |
| 30. | faceting | Cutting flat planes on clay |
| 31. | feldspar | Flux mineral in clay and glaze |
| 32. | fireclay | Heat-resistant clay used in bodies |
| 33. | firing | Heating clay to harden it |
| 34. | flocculant | Additive thickening suspended clay |
| 35. | flux | Material that lowers melting point |
| 36. | foot | Bottom support ring of a pot |
| 37. | gallery | Ledge supporting a lid |
| 38. | gas firing | Kiln firing fueled by gas |
| 39. | glaze | Glasslike coating fused onto pottery |
| 40. | greenware | Unfired or dried ceramic ware |
| 41. | grog | Crushed fired clay additive |
| 42. | handbuilding | Making forms without a wheel |
| 43. | handle | Part made for holding |
| 44. | heatwork | Combined effect of time and heat |
| 45. | incising | Carving lines into clay |
| 46. | iron | Common ceramic colorant |
| 47. | kaolin | Pure white clay mineral |
| 48. | kiln | High-temperature oven for firing ceramics |
| 49. | leather-hard | Partly dried, firm workable clay |
| 50. | lid | Cover for a vessel |
| 51. | lip | Outer edge of the rim |
| 52. | loop tool | Tool for trimming or carving |
| 53. | luting | Joining parts with soft clay |
| 54. | manganese | Brown or purple colorant |
| 55. | maturity | Point when clay fully develops |
| 56. | mold | Form used to shape clay |
| 57. | neck | Narrow section below rim |
| 58. | needle tool | Pointed tool for cutting clay |
| 59. | opacifier | Material making glaze opaque |
| 60. | oxidation | Firing with ample oxygen |
| 61. | oxide | Metal compound used for color |
| 62. | piercing | Cutting holes through clay |
| 63. | pinch pot | Pot formed by pinching clay |
| 64. | pinholing | Tiny holes in fired glaze |
| 65. | plaster | Mold material that absorbs water |
| 66. | plasticity | Clay’s ability to be shaped |
| 67. | porcelain | White vitrified ceramic body |
| 68. | porosity | Amount of open pore space |
| 69. | pyrometer | Instrument measuring kiln temperature |
| 70. | quartz inversion | Silica expansion point in firing |
| 71. | raku | Rapid low-fire ceramic process |
| 72. | reduction | Firing with limited oxygen |
| 73. | rib | Tool for shaping surfaces |
| 74. | rim | Top edge of a vessel |
| 75. | rutile | Titanium-rich ceramic mineral |
| 76. | score | Scratch surface before joining clay |
| 77. | sgraffito | Scratched decoration through slip |
| 78. | shino | Japanese feldspathic glaze |
| 79. | shoulder | Upper curved area of vessel |
| 80. | shrinkage | Size reduction during drying or firing |
| 81. | silica | Glass-forming material in ceramics |
| 82. | slab | Flat sheet of clay |
| 83. | slip | Liquid clay used for coating |
| 84. | spalling | Surface flakes breaking away |
| 85. | stoneware | Dense, durable high-fired pottery |
| 86. | terra sigillata | Refined slip for smooth surface |
| 87. | thermocouple | Sensor reading kiln temperature |
| 88. | throwing | Shaping clay on a wheel |
| 89. | tin | Opacifying glaze ingredient |
| 90. | trim | Cut excess clay from a pot |
| 91. | underglaze | Decoration applied beneath glaze |
| 92. | vitrification | Becoming glassy and nonporous |
| 93. | wadding | Clay pads preventing sticking |
| 94. | waist | Narrowed middle section |
| 95. | warping | Distortion during drying or firing |
| 96. | wedging | Kneading clay to remove air |
| 97. | wheel | Rotating device for throwing pots |
| 98. | wheelhead | Top rotating plate of wheel |
| 99. | wire cutter | Wire used to cut clay |
| 100. | wood firing | Kiln firing fueled by wood |
