: radiation that is in the region of the ultraviolet spectrum which extends from about 200 to 280 nm in wavelength and that is more hazardous than UVB but is mostly absorbed by earth's upper atmosphere

Word History

First Known Use

1978, in the meaning defined above

Time Traveler
The first known use of UVC was in 1978

Dictionary Entries Near UVC

Cite this Entry

“UVC.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/UVC. Accessed 8 Jun. 2023.

Medical Definition

UVC

noun
: radiation that is in the region of the ultraviolet spectrum which extends from about 200 to 280 nm in wavelength and that is more hazardous than UVB but is mostly absorbed by the earth's upper atmosphere
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