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TOEFL IELTS BNC: 3581 COCA: 3893

spectrum

noun

spec·​trum ˈspek-trəm How to pronounce spectrum (audio)
plural spectra ˈspek-trə How to pronounce spectrum (audio) or spectrums
1
a
: 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
2
a
: 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
Phrases
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

Synonyms

Example Sentences

beautiful scarves in all the colors of the spectrum the complete spectrum of opinions on this hotly debated subject
Recent Examples on the Web Milliron is an award-winning leader, teacher, author, speaker and consultant who has served across the K-12, higher education, philanthropy, corporate, and nonprofit spectrum over the last three decades. San Diego Union-Tribune, 18 Sep. 2022 Fetal alcohol spectrum disorder was identified as the most likely cause of his lifelong struggle with mental illness, according to defense experts. Rafael Olmeda, Sun Sentinel, 17 Sep. 2022 Autism spectrum disorder is a group of neurodevelopmental disorders affecting communication, learning, and social skills. Lauren Lee, CNN, 17 Sep. 2022 Last week, SpaceX asked the Federal Communications Commission for access to the same spectrum so that Starlink can deliver connectivity to mobile devices. Michael Kan, PCMAG, 16 Sep. 2022 In that case, terraplanter offers a solution to both ends of the plant parenthood spectrum. Andrea Beck, Better Homes & Gardens, 16 Sep. 2022 Lawmakers on either end of the ideological spectrum have vocalized support for imposing restrictions on stock trading. Theara Coleman, The Week, 16 Sep. 2022 The left wing of the First Reconstruction era’s political spectrum, sometimes called Radical Republicans, believed in social equality as well as political rights. Time, 15 Sep. 2022 On the other end of the success spectrum, Rochester Hills native Brad Keselowski is still looking for his first Cup Series victory in his home state. Ryan Ford, Detroit Free Press, 15 Sep. 2022 See More

Word History

Etymology

New Latin, from Latin, appearance — more at specter

First Known Use

1672, in the meaning defined at sense 1a

Time Traveler
The first known use of spectrum was in 1672

Phrases Containing spectrum

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