meaning of spectrum

1. An apparition; a specter.
2. The several colored and other rays of which light is composed, separated by the refraction of a prism or other means, and observed or studied either as spread out on a screen, by direct vision, by photography, or otherwise. See Illust. of Light, and Spectroscope.
3. A luminous appearance, or an image seen after the eye has been exposed to an intense light or a strongly illuminated object. When the object is colored, the image appears of the complementary color, as a green image seen after viewing a red wafer lying on white paper. Called also ocular spectrum.
4. Spectrum ZX Spectrum speculative evaluation A technique used in parallel processing where some evaluation may be started before it is known whether it is needed Eager evaluation. This may result in some wasted processing and may introduce unnecessary non-terminating processes but it can reduce the overall run time by making some needed results available earlier than they would be otherwise. Opposite: conservative evaluation.
5. broad range of related values or qualities or ideas or activities

Related Words

spectrum | spectrum analysis | spectrum line |

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