from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The quality of being reflective.
  • n. The ability to reflect.
  • n. Physics The ratio of the energy of a wave reflected from a surface to the energy possessed by the wave striking the surface.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Quality of being reflective.

from The Century Dictionary and Cyclopedia

  • n. Reflectiveness.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the fraction of radiant energy that is reflected from a surface
  • n. the capability of quiet thought or contemplation
  • n. the ability to reflect beams or rays


Sorry, no etymologies found.


  • We change it back over to what we call reflectivity where you just kind of see the rain shower of it.

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  • As it quiets, the skin lightens and the reflectivity is less noticeable.

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  • While much of the reflectivity was a natural consequence of the silicate composition of the growths, some of it was intentional.

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  • The drawback is reflectivity, which is fine in the home but awful under fluorescent lights.

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  • The "reflectivity" is the amount of transmitted power returned to the radar receiver.

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  • Currently traffic vests and jackets have reflective material that provides passive reflectivity, meaning that until a light source such as a vehicle's headlights hit the surface, they do not provide any safety to the officer.

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  • I'll often use sheers on black-framed windows; it cuts the reflectivity at night and heightens intimacy.

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  • Ice has a very high reflectivity and a very low absorptivity in the wavelengths of solar radiation.

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  • Equipped with a magic mirror at birth, he works a lifetime to improve its reflectivity.

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  • The new Mini-SAR image shows that this material is also dark in radar reflectivity, exactly what would be expected from a fine-grained, block-free deposit.

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