spectrum

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spectrum /ˈspɛktrəm/ noun
plural spectra /ˈspɛktrə/ or spectrums
spectrum
/ˈspɛktrəm/
noun
plural spectra /ˈspɛktrə/ or spectrums
Learner's definition of SPECTRUM
[count]
: the group of colors that a ray of light can be separated into including red, orange, yellow, green, blue, indigo, and violet : the colors that can be seen in a rainbow
technical : an entire range of light waves, radio waves, etc.
: a complete range of different opinions, people, etc.
often + of
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