brightness

1. The location of a visual perception along a continuum from black to white (synset 104959419)
   is a type of: light, lightness - the visual effect of illumination on objects or scenes as created in pictures
   subtypes:

   • blaze, brilliance, glare - a light within the field of vision that is brighter than the brightness to which the eyes are adapted
   • dazzle - brightness enough to blind partially and temporarily
   • glisten, glister, glitter, scintillation, sparkle - the quality of shining with a bright reflected light
   • flash - a momentary brightness
   • glint - a spatially localized brightness
   • iridescence, opalescence - the visual property of something having a milky brightness and a play of colors from the surface
   • effulgence, radiance, radiancy, refulgence, refulgency, shine - the quality of being bright and sending out rays of light
   • brilliancy, luster, lustre, splendor, splendour - a quality that outshines the usual
2. Intelligence as manifested in being quick and witty (synset 105628738)
   is a type of: intelligence - the ability to comprehend; to understand and profit from experience
   same as: cleverness, smartness
3. The quality of being luminous;
   Emitting or reflecting light (synset 105025269)
   "its luminosity is measured relative to that of our sun"
   tells us about:

   • bright - emitting or reflecting light readily or in large amounts
   • dull - emitting or reflecting very little light
   is a type of: physical property - any property used to characterize matter and energy and their interactions
   subtypes:

   • illuminance, illumination - the luminous flux incident on a unit area
   • incandescence - light from heat
   • glow, luminescence - light from nonthermal sources
   same as: brightness level, light, luminance, luminosity, luminousness

Other Searches

• Rhyme: Dillfrog, RhymeZone
• Definition: Wiktionary, Dictionary.com, Wikipedia, Merriam-Webster, WordNet, Power Thesaurus
• Imagery: Google, Flickr, Bing