Noun reflectivity has 2 senses
  1. coefficient of reflection, reflection factor, reflectance, reflectivity - the fraction of radiant energy that is reflected from a surface
    --1 is a kind of coefficient
  2. reflection, reflexion, reflectivity - the ability to reflect beams or rays
    --2 is a kind of physical property
    --2 has particulars: echo, reverberation, sound reflection, replication
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