spectrum

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spectrum absorption spectrum broad-spectrum electromagnetic spectrum emission spectrum mass spectrum narrow-spectrum Raman spectrum visible spectrum wide-spectrum

Main Entry: spec·trum
Pronunciation: spek-trm
Function: noun
Inflected Form(s): plural spec·tra /-tr /; or spectrums
1 a : a continuum of color formed when a beam of white light is dispersed (as by passage through a prism) so that its component wavelengths are arranged in order b : any of various continua that resemble a spectrum in consisting of an ordered arrangement by a particular characteristic (as frequency or energy): as (1) : ELECTROMAGNETIC SPECTRUM (2) : MASS SPECTRUM c : the representation (as a plot) of a spectrum
2 : a continuous sequence or range; specifically : a range of effectiveness against pathogenic organisms <an antibiotic with a broad spectrum>