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Dictionary

ul•tra•vi•o•let

Pronunciation: (ul"tru-vī'u-lit), [key]
—adj.
1. beyond the violet in the spectrum, corresponding to light having wavelengths shorter than 4000 angstrom units.
2. pertaining to, producing, or utilizing light having such wavelengths: an ultraviolet lamp. Cf. infrared.

—n.
ultraviolet radiation.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

ultratropical

ultraviolet filter

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