Definition of “spectrum” - English Dictionary

“spectrum” in British English

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spectrumnoun [ C ]

uk /ˈspek.trəm/ us /ˈspek.trəm/ plural spectra spectrums

spectrum noun [ C ] (COLOURS)

C2 the set of colours into which a beam of light can be separated, or a range of waves, such as light waves or radio waves:

The colours of the spectrum - red, orange, yellow, green, blue, indigo, and violet - can be seen in a rainbow.

More examples

  • The survey revealed a wide spectrum of opinion.
  • He is some way along the autistic spectrum.
  • He was held in great affection by people from the entire political spectrum.

Idiom(s)

(Definition of “spectrum” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“spectrum” in American English

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spectrumnoun [ C ]

us /ˈspek·trəm/

spectrum noun [ C ] (RANGE)

a range of objects, ideas, or opinions:

There’s agreement across the political spectrum.
A wide spectrum of opinion was represented at the meeting.

spectrum noun [ C ] (COLORS)

plural spectra /ˈspek·trə/ spectrums physics the set of colors into which a beam of light can be separated

plural spectra /ˈspek·trə/ spectrums physics Spectrum also means a range of waves such as light waves or radio waves.

(Definition of “spectrum” from the Cambridge Academic Content Dictionary © Cambridge University Press)

“spectrum” in Business English

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spectrumnoun [ C ]

uk /ˈspektrəm/ us

a range of similar things:

a spectrum of sth A methodology will have to be developed to gradually cover the entire spectrum of technologies.
a wide/broad spectrum
the economic/business/political spectrum He has support from across the whole political spectrum.

(Definition of “spectrum” from the Cambridge Business English Dictionary © Cambridge University Press)