| No. | Term | Definition |
|---|---|---|
| 1. | Afterglow | Faint radiance after sunset. |
| 2. | Ambient glow | Background illumination in a space. |
| 3. | Arc lamp | Bright light from electric arc. |
| 4. | Aurora | Polar sky glow from charged particles. |
| 5. | Beacon | Guiding signal light. |
| 6. | Beam | Directed ray of illumination. |
| 7. | Bioluminescence | Light produced by living organisms. |
| 8. | Blaze | Strong, burning brightness. |
| 9. | Blink | Brief flash of light. |
| 10. | Brightening | Becoming more luminous. |
| 11. | Candlelight | Light from a candle flame. |
| 12. | Chiaroscuro | Strong light-dark contrast. |
| 13. | Clearance | Increased visibility or brightness. |
| 14. | Cold glow | Pale, cool-toned light. |
| 15. | Coruscation | Shimmering, sparkling flashes. |
| 16. | Dawn | First light of morning. |
| 17. | Daybreak | Time when daylight begins. |
| 18. | Daylight | Natural light from the sun. |
| 19. | Dazzle | Overwhelming brightness that blinds. |
| 20. | Diode glow | Small light from an LED. |
| 21. | Downlight | Light directed downward. |
| 22. | Effulgence | Radiant splendor; shining brightness. |
| 23. | Electric glow | Light produced by electricity. |
| 24. | Emanation | Something that radiates outward. |
| 25. | Emberglow | Dim red light from embers. |
| 26. | Enlightenment | Illumination; clarity of understanding. |
| 27. | Fireglow | Warm light from a fire. |
| 28. | Firelight | Light cast by flames. |
| 29. | Flare | Sudden bright burst of light. |
| 30. | Flash | Brief, intense emission of light. |
| 31. | Floodlight | Broad, powerful illumination. |
| 32. | Fluorescence | Light emitted after absorbing energy. |
| 33. | Glare | Harsh, dazzling brightness. |
| 34. | Gleam | Small, brief shine. |
| 35. | Glimmer | Faint, wavering light. |
| 36. | Glisten | Shine with reflected light. |
| 37. | Glitter | Sparkle with many tiny reflections. |
| 38. | Glow | Steady, gentle light. |
| 39. | Golden hour | Warm light near sunrise or sunset. |
| 40. | Halation | Halo-like glow around bright areas. |
| 41. | Halo | Ring of light around something. |
| 42. | Headlight | Forward-facing vehicle lamp. |
| 43. | High beam | Bright headlamp setting. |
| 44. | Highlight | Brightest area in an image. |
| 45. | Illuminance | Measured amount of light on surface. |
| 46. | Illumination | The act or result of lighting. |
| 47. | Incandescence | Light from heat. |
| 48. | Infrared glow | Heat-related radiation beyond red. |
| 49. | Iridescence | Shimmering color-changing light. |
| 50. | Jewel-like sparkle | Brilliant, gemlike scintillation. |
| 51. | Klieg light | Intense studio spotlight. |
| 52. | Lanternlight | Light from a lantern. |
| 53. | Laser beam | Narrow, coherent light beam. |
| 54. | Luminescence | Light emission without heat. |
| 55. | Luminosity | Brightness; light-giving quality. |
| 56. | Luminousness | State of being bright. |
| 57. | Luster | Soft shine on a surface. |
| 58. | Moonbeam | Ray of moonlight. |
| 59. | Moonlight | Light reflected from the moon. |
| 60. | Neon glow | Bright colored light from neon. |
| 61. | Nightlight | Small light used at night. |
| 62. | Nimbus | Luminous cloud or halo. |
| 63. | Noonday sun | Strong midday sunlight. |
| 64. | Opalescence | Milky, shifting sheen. |
| 65. | Outshine | Be brighter than others. |
| 66. | Overglow | Excessive or spreading brightness. |
| 67. | Phosphorescence | Slowly emitted light after exposure. |
| 68. | Photon stream | Flow of light particles. |
| 69. | Pinhole beam | Thin ray through a tiny opening. |
| 70. | Polar glow | High-latitude sky illumination. |
| 71. | Radiance | Bright, shining emission. |
| 72. | Ray | Line of light from a source. |
| 73. | Reflection | Light bounced from a surface. |
| 74. | Refraction | Bending of light through medium. |
| 75. | Refulgence | Brilliant shining brightness. |
| 76. | Rim light | Edge-highlighting backlight effect. |
| 77. | Scintillation | Twinkling, rapid flashes. |
| 78. | Searchlight | Powerful directional beam for scanning. |
| 79. | Shimmer | Soft, wavering shine. |
| 80. | Shine | Emit or reflect brightness. |
| 81. | Skyglow | Diffuse light in the night sky. |
| 82. | Soft glow | Gentle, non-harsh illumination. |
| 83. | Spark | Tiny flash of light. |
| 84. | Sparkle | Bright, lively twinkling. |
| 85. | Spotlight | Focused light on a subject. |
| 86. | Starlight | Light from stars. |
| 87. | Streetlight | Lamp lighting a roadway. |
| 88. | Sunbeam | Ray of sunlight. |
| 89. | Sunburst | Sudden bright spreading rays. |
| 90. | Sundown | Time when the sun sets. |
| 91. | Sunlight | Natural light from the sun. |
| 92. | Sunrise | Sun appearing; morning light begins. |
| 93. | Sunset | Sun disappearing; evening light fades. |
| 94. | Torchlight | Light from a torch. |
| 95. | Twinkle | Intermittent small flashes. |
| 96. | Ultraviolet | Radiation beyond violet light. |
| 97. | Underlighting | Light cast from below. |
| 98. | Upglow | Light shining upward. |
| 99. | Uplight | Fixture directing light upward. |
| 100. | Vividness | Striking brightness or intensity. |