ultraviolet
[ uhl-truh-vahy-uh-lit ]
/ ˌʌl trəˈvaɪ ə lɪt /
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adjective
beyond the violet in the spectrum, corresponding to light having wavelengths shorter than 4000 angstrom units.
pertaining to, producing, or utilizing light having such wavelengths: an ultraviolet lamp.
noun
ultraviolet radiation.
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for ultraviolet
British Dictionary definitions for ultraviolet
ultraviolet
/ (ˌʌltrəˈvaɪəlɪt) /
noun
the part of the electromagnetic spectrum with wavelengths shorter than light but longer than X-rays; in the range 0.4 × 10 –6 and 1 × 10 –8 metres
adjective
of, relating to, or consisting of radiation lying in the ultravioletultraviolet radiation Abbreviation: UV
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Medical definitions for ultraviolet
ultraviolet
[ ŭl′trə-vī′ə-lĭt ]
adj.
Of or relating to the range of invisible radiation wavelengths from about 4 nanometers, on the border of the x-ray region, to about 380 nanometers, just beyond the violet in the visible spectrum.
n.
Ultraviolet light or the ultraviolet part of the spectrum.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for ultraviolet
ultraviolet
[ ŭl′trə-vī′ə-lĭt ]
Adjective
Relating to electromagnetic radiation having frequencies higher than those of visible light but lower than those of x-rays, approximately 1015-1016 hertz. Some animals, such as bees, are capable of seeing ultraviolet radiation invisible to the human eye. See more at electromagnetic spectrum.
Noun
Ultraviolet light or the ultraviolet part of the spectrum. See Note at infrared.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.