spectrum

noun

spec·trum | \ ˈspek-trəm

plural spectra\ ˈspek-trə

\ or spectrums

Definition of spectrum

1a : a continuum of color formed when a beam of white light is dispersed (as by passage through a prism) so that its component wavelengths are arranged in order

b : any of various continua that resemble a color spectrum in consisting of an ordered arrangement by a particular characteristic (such as frequency or energy): such as

(1) : electromagnetic spectrum

(2) : radio spectrum

(3) : the range of frequencies of sound waves

(4) : mass spectrum

c : the representation (such as a plot) of a spectrum

2a : a continuous sequence or range a wide spectrum of interests opposite ends of the political spectrum

b : kinds of organisms associated with a particular situation (such as an environment)

c : a range of effectiveness against pathogenic organisms an antibiotic with a broad spectrum

on the spectrum

: exhibiting traits associated with autism spectrum disorder … quiet areas and sensory bags with headphones … and other ways to help kids who are on the spectrum cope with unfamiliar, noisy surroundings.— Rachel Molenda … Stephanie Adams, cofounder of the Autism and Asperger's Society, said: "We started the society because we wanted to make a place where people on the spectrum can spend their time and not feel isolated. …"— Kelsey Maxwell

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Examples of spectrum in a Sentence

beautiful scarves in all the colors of the spectrum the complete spectrum of opinions on this hotly debated subject

Recent Examples on the Web

Students and teachers work in teams, developing the wide spectrum of skills needed when producing a piece of musical theater, including critical thinking, problem solving, ensemble building, communication, self-confidence and interpersonal skills. — Austen Erblat, sun-sentinel.com, "Four Palm Beach County elementary schools chosen for Disney musical theater program," 22 Aug. 2019 The vast majority of the country’s 80 million people identify as Sunni Muslim, but follow a wide spectrum of daily practice. — Umar Farooq, Los Angeles Times, "Turkey extends censorship rules to streaming services. Critics say political dissent is the real target," 21 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'spectrum.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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More Definitions for spectrum

spectrum

noun

English Language Learners Definition of spectrum

: the group of colors that a ray of light can be separated into including red, orange, yellow, green, blue, indigo, and violet : the colors that can be seen in a rainbow

technical : an entire range of light waves, radio waves, etc.

: a complete range of different opinions, people, etc.

See the full definition for spectrum in the English Language Learners Dictionary

spectrum

noun

spec·trum | \ ˈspek-trəm

plural spectra\ -trə \ or spectrums

Kids Definition of spectrum

: the group of different colors including red, orange, yellow, green, blue, indigo, and violet seen when light passes through a prism and falls on a surface or when sunlight is affected by drops of water (as in a rainbow)

spectrum

noun

spec·trum | \ ˈspek-trəm

plural spectra\ -trə

\ or spectrums

Medical Definition of spectrum

1a : a continuum of color formed when a beam of white light is dispersed (as by passage through a prism) so that its component wavelengths are arranged in order

b : any of various continua that resemble a spectrum in consisting of an ordered arrangement by a particular characteristic (as frequency or energy): as

(1) : electromagnetic spectrum

(2) : mass spectrum

c : the representation (as a plot) of a spectrum

2 : a continuous sequence or range specifically : a range of effectiveness against pathogenic organisms — see broad-spectrum, narrow-spectrum

spectrum

Definition of spectrum

Synonyms for spectrum

Examples of spectrum in a Sentence

First Known Use of spectrum

History and Etymology for spectrum

English Language Learners Definition of spectrum

Kids Definition of spectrum

Medical Definition of spectrum

spectrum

Definition of spectrum

Synonyms for spectrum

Examples of spectrum in a Sentence

First Known Use of spectrum

History and Etymology for spectrum

English Language Learners Definition of spectrum

Kids Definition of spectrum

Medical Definition of spectrum

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