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’




definition by Oxford Dictionaries