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spectrum

Spectrum is the range of colors of wavelength energy sent out from a light source when viewed through a prism. (noun)

An example of a spectrum is a rainbow.

Spectrum is a broad range of related ideas, qualities or activities. (noun)

An example of a spectrum is a group of activities used for teaching someone how to play basketball.

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See spectrum in Webster's New World College Dictionary

See spectrum in American Heritage Dictionary 4

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