spectrum

C1 Topic:Describing Qualities

US /ˈspɛktrəm/ UK /ˈspɛktɹəm/ See IPA manual

Freq #11765

Meanings

1

noun
A wide range of related ideas, opinions, qualities, or things.

The festival attracts people from across the political spectrum.
2

noun
The band of colours produced when light passes through a prism, or the full range of light and radiation.

A rainbow shows the colours of the visible spectrum.

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Synonyms

1 noun · a wide range of related... continuumsliding scale

Word family

Forms spectraspectrums

Derived forms autospectrumbispectrumbroad-spectrumcepstrummultispectrumnarrow-spectrumpolyspectrumpseudospectrumspec-chumspectro-spectrumysubspectrum

Related forms spectral

Etymology tree Proto-Indo-European *speḱ- Proto-Indo-European *-yeti Proto-Indo-European *spéḱyeti Proto-Italic *spekjō Latin speciō Proto-Indo-European *-trom Proto-Italic *-trom Latin -trum Latin spectrumbor. English spectrum From Latin spectrum (“appearance, image, apparition”), from speciō (“look at, view”). Doublet of specter. See also scope.

spectrum Latin

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Describing Qualities

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# spectrum

**Type:** Word
**Level:** C1
**Part of speech:** noun
**IPA (US):** /ˈspɛktrəm/
**IPA (UK):** /ˈspɛktɹəm/
**Frequency rank:** 11765

## Meanings
1. A wide range of related ideas, opinions, qualities, or things.
2. The band of colours produced when light passes through a prism, or the full range of light and radiation.

## Examples
- The festival attracts people from across the political spectrum.
- A rainbow shows the colours of the visible spectrum.

## Derived Forms
- autospectrum
- bispectrum
- broad-spectrum
- cepstrum
- multispectrum
- narrow-spectrum
- polyspectrum
- pseudospectrum
- spec-chum
- spectro-
- spectrumy
- subspectrum

## Related Forms
- spectral

## Roots and Affixes
- Root: spectrum

## Etymology
Etymology tree Proto-Indo-European *speḱ- Proto-Indo-European *-yeti Proto-Indo-European *spéḱyeti Proto-Italic *spekjō Latin speciō Proto-Indo-European *-trom Proto-Italic *-trom Latin -trum Latin spectrumbor. English spectrum From Latin spectrum (“appearance, image, apparition”), from speciō (“look at, view”). Doublet of specter. See also scope.

## AI Etymology
Spectrum comes from Latin spectrum (“appearance, image, apparition”), from speciō (“look at, view”). Doublet of specter. See also scope. The historical chain includes spectrum (Latin). The surrounding word family includes derived forms such as autospectrum, bispectrum, broad-spectrum, and cepstrum and related forms such as spectral. In present use it covers a wide range of related ideas, opinions, qualities, or things and the band of colours produced when light passes through a prism, or the full range of light and radiation.

## Topics
- Describing Qualities

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