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spectra
We have found lemma(root) word of spectra : spectrum.
Definitions
[ˈspɛktrəm], (Noun)
Definitions:
- a band of colours, as seen in a rainbow, produced by separation of the components of light by their different degrees of refraction according to wavelength
- used to classify something in terms of its position on a scale between two extreme points
(e.g: the left or the right of the political spectrum)
Phrases:
- on the spectrum
Origin
:
early 17th century (in the sense ‘spectre’): from Latin, literally ‘image, apparition’, from specere ‘to look’
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definition by Oxford Dictionaries