spectrum
[noun]
Synonyms: apparition, bogey, eidolon, ghost, haunt, phantasm, revenant, shade, spirit, spook, range, diapason, gamut, scale

[TahlilGaran] English Synonym Dictionary ▲

spec‧trum /ˈspektrəm/ noun (plural spectra /-trə/) [countable]
[Date: 1800-1900; Language: Latin; Origin: 'something that appears, image', from specere 'to look (at)']

1. a complete range of opinions, people, situations etc, going from one extreme to its opposite
spectrum of
the ethnic spectrum of America
across the spectrum
The bill drew support from across the political spectrum.
broad/wide/full etc spectrum
a broad spectrum of environmental groups
The two articles here represent opposite ends of the spectrum.

2. the set of bands of coloured light into which a beam of light separates when it is passed through a prism

3. a complete range of radio, sound etc waves:
the electromagnetic spectrum

[TahlilGaran] Dictionary of Contemporary English ▲

spectrum
noun
I. of colours
ADJ. visible Beyond the red end of the visible light spectrum is infrared.
continuous a continuous spectrum of light waves
colour, electromagnetic
SPECTRUM + NOUN analysis
PHRASES the colours of the spectrum Other species can perceive colours of the spectrum that are invisible to us.
the … band/end/part of the spectrum the ultraviolet part of the spectrum

[TahlilGaran] Collocations Dictionary ▲

spectrum
II. full or wide range
ADJ. complete, full The courses cover the full spectrum of levels.
broad, wide | narrow | entire, whole | political, social
VERB + SPECTRUM cover
PREP. across the ~ There was consensus across the political spectrum.
~ of a wide spectrum of interests
PHRASES at one/the other end of the spectrum, both/opposite ends of the spectrum The two speakers were chosen to represent opposite ends of the spectrum.
a spectrum of opinion The newspaper covers a broad spectrum of opinion.

[TahlilGaran] Collocations Dictionary ▲