Definition of "ultraviolet" [ul•tra•vi•o•let]

  • (adjective) 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.
  • (noun) Ultraviolet light or the ultraviolet part of the spectrum.

Use "ultraviolet" in a sentence

  • "The Restore Clean Water System from HoMedics claims that its built-in ultraviolet lights will kill 99. 9999% of bacteria, 99.99% of viruses and 99.95% of microbial cysts in your drinking water."
  • "Paget, investigated the significance of a green fluorescence visible in ultraviolet light which pointed to adrenaline in the presence of O2, and alkali, and found that this appears to a high degree specific for adrenaline."
  • "The band from 0.1 to 0.4 micrometers is called ultraviolet radiation."

Words like "ultraviolet"