Definition of reflectivity in English:

reflectivity

Syllabification: re·flec·tiv·i·ty
Pronunciation: /riˌflekˈtivətē, ˌrēˌflek-
 
 
/

noun

Physics
  • The property of reflecting light or radiation, especially reflectance as measured independently of the thickness of a material.
    More example sentences
    • Light reflectivity is another key performance area.
    • When polished, silver has the highest-known reflectivity of visible light.
    • Aluminum has a light reflectivity of over 80 percent, which has led to its wide use in lighting fixtures.

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Word of the day skosh
Pronunciation: skōSH
noun
a small amount; a little