reflectivity

noun

re·​flec·​tiv·​i·​ty ˌrē-ˌflek-ˈti-və-tē How to pronounce reflectivity (audio)
ri-
: the reflective quality or power of a surface or material
… there are many examples of luster-decorated ceramics, in which Islamic potters emulated the reflectivity of metalwork by applying metal oxides to white-glazed vessels …Roberta Smith
The warming at the surface could be expected to melt snow and ice, reducing the earth's albedo, or reflectivity.Roger Revelle

Examples of reflectivity in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Mirrors have poor reflectivity and degrade fast, while normal lenses absorb XUV light and stretch the attosecond pulses, blurring their precision. Neetika Walter, Interesting Engineering, 5 Nov. 2025 Our planet is darkening too, as Earth's reflectivity, or albedo, is dropping to near-record lows due to melting ice and reduced snow cover that expose darker surfaces that absorb even more heat. Sharmila Kuthunur, Space.com, 29 Oct. 2025 This reflectivity is known as albedo, and Earth’s overall albedo has been decreasing for decades. Ryan Green, Scientific American, 22 Oct. 2025 Changing the temperature changes lots about the Earth, from the reflectivity of sea ice to the stability of permafrost. Joseph Howlett, Quanta Magazine, 15 Sep. 2025 See All Example Sentences for reflectivity

Word History

First Known Use

1879, in the meaning defined above

Time Traveler
The first known use of reflectivity was in 1879

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Cite this Entry

“Reflectivity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/reflectivity. Accessed 13 Nov. 2025.

Last Updated: - Updated example sentences
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