Adjacent Words

ultraviolet definitions

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WordNet (r) 3.0 (2005)

adj
1: having or employing wavelengths shorter than light but longer than X-rays; lying outside the visible spectrum at its violet end; "ultraviolet radiation"; "an ultraviolet lamp" n
1: radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays [syn: ultraviolet, ultraviolet radiation, ultraviolet light, ultraviolet illumination, UV]

Merriam Webster's

adjective Date: 1840 1. situated beyond the visible spectrum at its violet end — used of radiation having a wavelength shorter than wavelengths of visible light and longer than those of X-rays 2. relating to, producing, or employing ultraviolet radiation • ultraviolet noun

Oxford Reference Dictionary

adj. Physics 1 having a wavelength (just) beyond the violet end of the visible spectrum. 2 of or using such radiation.

Webster's 1913 Dictionary

Ultraviolet Ul`tra*vi"o*let, a. [Pref. ultra- + violet.] (Physics) Lying outside the visible spectrum at its violet end; -- said of rays more refrangible than the extreme violet rays of the spectrum.

Collin's Cobuild Dictionary

Ultraviolet light or radiation is what causes your skin to become darker in colour after you have been in sunlight. In large amounts ultraviolet light is harmful. The sun's ultraviolet rays are responsible for both tanning and burning. ADJ: usu ADJ n