spectra

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spec·tra

 (spĕk′trə)
n.
A plural of spectrum.

spectra

(ˈspɛktrə)
n
the plural of spectrum

spec•trum

(ˈspɛk trəm)

n., pl. -tra (-trə), -trums.
1.
a. an array of entities, as light waves or particles, ordered in accordance with the magnitudes of a common physical property, as wavelength or mass.
b. the band or series of colors, together with invisible extensions, produced by dispersion of radiant energy, as by a prism.
2. a broad range of varied but related ideas, objects, etc., that form a continuous series or sequence: the spectrum of political beliefs.
[1605–15; < Latin: appearance, form <spec(ere) to look, regard]
Translations
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More than 250 thousand pages of content were converted from the pre-existing site, originally developed using Macromedia Spectra, over to CommonSpot.