Lexic.us

Definition of Ultraviolet

1. Adjective. Having or employing wavelengths shorter than light but longer than X-rays; lying outside the visible spectrum at its violet end. "An ultraviolet lamp"

2. Noun. Radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays.

Definition of Ultraviolet

1. a. Lying outside the visible spectrum at its violet end; -- said of rays more refrangible than the extreme violet rays of the spectrum.

Definition of Ultraviolet

1. Adjective. of electromagnetic radiation beyond (higher in frequency than) light visible to the human eye; radiation with wavelengths from 380 nanometre - 10 nanometre ¹

2. Noun. Ultraviolet colour. ¹

¹ Source: wiktionary.com

Definition of Ultraviolet

1. [n -S]

Medical Definition of Ultraviolet

1. Continuous spectrum beyond the violet end of the visible spectrum (wavelength less than 400nm) and above the X-ray wavelengths (greater than 5 nm). Glass absorbs UV, so optical systems at these wavelengths have to be of quartz. Nucleic acids absorb UV most strongly at around 260nm and this is the wavelength most likely to cause mutational damage (by the formation of thymine dimers). It is the UV component of sunlight that causes actinic keratoses to form in skin, but that is also required for Vitamin D synthesis. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Lexicographical Neighbors of Ultraviolet

ultrathin ultratight ultratiny ultratough ultratraditional ultratraditionalist ultratraditionalists ultratropical ultravacua ultravacuum

ultravacuums ultravast ultraviolence ultraviolences ultraviolent ultraviolet (current term) ultraviolet A ultraviolet B ultraviolet C ultraviolet illumination

ultraviolet keratoconjunctivitis ultraviolet lamp ultraviolet light ultraviolet lights ultraviolet microscope ultraviolet radiation ultraviolet rays ultraviolet source ultraviolet spectrum ultraviolet therapy

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