spectrum

[ spek-truhm ]

/ ˈspɛk trəm /

SEE SYNONYMS FOR spectrum ON THESAURUS.COM

noun, plural spec·tra [spek-truh], /ˈspɛk trə/, spec·trums.

Physics.

an array of entities, as light waves or particles, ordered in accordance with the magnitudes of a common physical property, as wavelength or mass: often the band of colors produced when sunlight is passed through a prism, comprising red, orange, yellow, green, blue, indigo, and violet.
this band or series of colors together with extensions at the ends that are not visible to the eye, but that can be studied by means of photography, heat effects, etc., and that are produced by the dispersion of radiant energy other than ordinary light rays.Compare band spectrum, electromagnetic spectrum, mass spectrum.

a broad range of varied but related ideas or objects, the individual features of which tend to overlap so as to form a continuous series or sequence: the spectrum of political beliefs.

Origin of spectrum

First recorded in 1605–15; from Latin: “appearance, form,” equivalent to spec(ere) “to look at, regard” + -trum instrumental noun suffix

Words nearby spectrum

spectroradiometer, spectroscope, spectroscopic analysis, spectroscopic binary, spectroscopy, spectrum, spectrum analyser, spectrum analysis, spectrum disorder, specular, speculate

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for spectrum

The federal government also plans to auction more spectrum in the 3GHz to 4GHz band soon, which the carriers will likely acquire to improve their 5G networks.
By one key measure of tech prowess, the U.S. ranks dead last|Aaron Pressman|August 26, 2020|Fortune
Instead, we’re merging the old and the new into a spectrum of options, allowing them to collide and coexist as long as they meet the needs of patients and allow us to advance toward an optimal state of functioning.
COVID-19 has spurred rapid transformation in health care. Let’s make sure it stays that way|jakemeth|August 20, 2020|Fortune
Just over half a decade previously, many network operators had spent eye-watering amounts on securing radio spectrum for 3G mobile-broadband networks, but they still had little to show for it.
In the 5G race, the prize remains unclear|David Meyer|August 20, 2020|Fortune
At the other end of the wage spectrum, demand for farm workers is as strong as ever — though the jobs carry harrowing coronavirus risks.
Sunday Magazine: A World in Need|Daniel Malloy|August 16, 2020|Ozy

They assessed whether each measurement in each person was toward the female end of the spectrum, toward the male end or intermediate.
Brain Scientists Haven’t Been Able To Find Major Differences Between Women’s And Men’s Brains, Despite Over A Century Of Searching|LGBTQ-Editor|August 13, 2020|No Straight News
On the other end of the spectrum, there lies an artist like Lena Dunham, who engages in a flaunting of the flawed self.
Daphne Merkin on Lena Dunham, Book Criticism, and Self-Examination|Mindy Farabee|December 26, 2014|DAILY BEAST
Overall, Paris Magnum reaches both too widely and too thinly in trying to convey a sense of spectrum.
A History of Paris in 150 Photographs|Sarah Moroz|December 14, 2014|DAILY BEAST
Today, Sunday, the cast will perform a softened, “autism-friendly” version of the production for those on the spectrum.
The Brit Who Stormed Broadway|Tim Teeman|December 7, 2014|DAILY BEAST
On the opposite end of the spectrum are two other standout works, which depict Mary as a loving, nurturing mother.
The Virgin Mary Lookbook|William O’Connor|December 7, 2014|DAILY BEAST
The new term denotes a spectrum of problem drinking that can range from mild to moderate to severe.
Americans Drink Too Much, But We’re Not All Alcoholics|Gabrielle Glaser|November 25, 2014|DAILY BEAST
On this account it has been customary to say that the red end of the spectrum was the heating end.
The Telephone|A. E. Dolbear
Ever since Newton's day it has been fashionable to speak of the spectrum as nature's chart of colors.
Elementary Color|Milton Bradley
In subsequent chapters we shall have occasion to consider more fully these different types of spectrum.
A Text-Book of Astronomy|George C. Comstock
He filled a glass tube with a solution of sulphate of quinine and then moved it through the spectrum, entering at the red ray.
The White Spark|Orville Livingston Leach
It was based on the observed relation between the color of a star and the general character of its spectrum.
The Popular Science Monthly, September, 1900|Various

British Dictionary definitions for spectrum

spectrum

/ (ˈspɛktrəm) /

noun plural -tra (-trə)

the distribution of colours produced when white light is dispersed by a prism or diffraction grating. There is a continuous change in wavelength from red, the longest wavelength, to violet, the shortest. Seven colours are usually distinguished: violet, indigo, blue, green, yellow, orange, and red

the whole range of electromagnetic radiation with respect to its wavelength or frequency

any particular distribution of electromagnetic radiation often showing lines or bands characteristic of the substance emitting the radiation or absorbing itSee also absorption spectrum, emission spectrum

any similar distribution or record of the energies, velocities, masses, etc, of atoms, ions, electrons, etca mass spectrum

any range or scale, as of capabilities, emotions, or moods

another name for an afterimage

Word Origin for spectrum

C17: from Latin: appearance, image, from spectāre to observe, from specere to look at

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Cultural definitions for spectrum

spectrum

The range of wavelengths characteristic of a specific type of radiation.

notes for spectrum

The spectrum making up visible light contains light in the colors violet, indigo, blue, green, yellow, orange, and red, with violet having the shortest wavelength and highest frequency, and red having the longest wavelength and lowest frequency.

Medical definitions for spectrum

spectrum

[ spĕk′trəm ]

n. pl. spec•trums

The distribution of a characteristic of a physical system or phenomenon, especially the distribution of energy emitted by a radiant source arranged in order of wavelengths.

The color image presented when white light is resolved into its constituent colors: red, orange, yellow, green, blue, indigo, violet.

The plot of intensity as opposed to wavelength of light emitted or absorbed by a substance, usually characteristic of the substance and used in qualitative and quantitative analysis.

The distribution of atomic or subatomic particles in a system, as in a magnetically resolved molecular beam, arranged in order of masses.

The group of pathogenic organisms against which an antibiotic or other antibacterial agent is effective.

Scientific definitions for spectrum

spectrum

[ spĕk′trəm ]

Plural spectra (spĕk′trə) spectrums

A range over which some measurable property of a physical phenomenon, such as the frequency of sound or electromagnetic radiation, or the mass of specific kinds of particles, can vary. For example, the spectrum of visible light is the range of electromagnetic radiation with frequencies between between 4.7 X 1014 and 7.5 X 1014 hertz.

The observed distribution of a phenomenon across a range of measurement. See more at atomic spectrum spectroscopy.

单词	spectrum
释义	spectrum [ spek-truhm ] / ˈspɛk trəm / SEE SYNONYMS FOR spectrum ON THESAURUS.COM noun, plural spec·tra [spek-truh], /ˈspɛk trə/, spec·trums. Physics. an array of entities, as light waves or particles, ordered in accordance with the magnitudes of a common physical property, as wavelength or mass: often the band of colors produced when sunlight is passed through a prism, comprising red, orange, yellow, green, blue, indigo, and violet. this band or series of colors together with extensions at the ends that are not visible to the eye, but that can be studied by means of photography, heat effects, etc., and that are produced by the dispersion of radiant energy other than ordinary light rays.Compare band spectrum, electromagnetic spectrum, mass spectrum. a broad range of varied but related ideas or objects, the individual features of which tend to overlap so as to form a continuous series or sequence: the spectrum of political beliefs. Origin of spectrum First recorded in 1605–15; from Latin: “appearance, form,” equivalent to spec(ere) “to look at, regard” + -trum instrumental noun suffix Words nearby spectrum spectroradiometer, spectroscope, spectroscopic analysis, spectroscopic binary, spectroscopy, spectrum, spectrum analyser, spectrum analysis, spectrum disorder, specular, speculate Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for spectrum The federal government also plans to auction more spectrum in the 3GHz to 4GHz band soon, which the carriers will likely acquire to improve their 5G networks. By one key measure of tech prowess, the U.S. ranks dead last\|Aaron Pressman\|August 26, 2020\|Fortune Instead, we’re merging the old and the new into a spectrum of options, allowing them to collide and coexist as long as they meet the needs of patients and allow us to advance toward an optimal state of functioning. COVID-19 has spurred rapid transformation in health care. Let’s make sure it stays that way\|jakemeth\|August 20, 2020\|Fortune Just over half a decade previously, many network operators had spent eye-watering amounts on securing radio spectrum for 3G mobile-broadband networks, but they still had little to show for it. In the 5G race, the prize remains unclear\|David Meyer\|August 20, 2020\|Fortune At the other end of the wage spectrum, demand for farm workers is as strong as ever — though the jobs carry harrowing coronavirus risks. Sunday Magazine: A World in Need\|Daniel Malloy\|August 16, 2020\|Ozy They assessed whether each measurement in each person was toward the female end of the spectrum, toward the male end or intermediate. Brain Scientists Haven’t Been Able To Find Major Differences Between Women’s And Men’s Brains, Despite Over A Century Of Searching\|LGBTQ-Editor\|August 13, 2020\|No Straight News On the other end of the spectrum, there lies an artist like Lena Dunham, who engages in a flaunting of the flawed self. Daphne Merkin on Lena Dunham, Book Criticism, and Self-Examination\|Mindy Farabee\|December 26, 2014\|DAILY BEAST Overall, Paris Magnum reaches both too widely and too thinly in trying to convey a sense of spectrum. A History of Paris in 150 Photographs\|Sarah Moroz\|December 14, 2014\|DAILY BEAST Today, Sunday, the cast will perform a softened, “autism-friendly” version of the production for those on the spectrum. The Brit Who Stormed Broadway\|Tim Teeman\|December 7, 2014\|DAILY BEAST On the opposite end of the spectrum are two other standout works, which depict Mary as a loving, nurturing mother. The Virgin Mary Lookbook\|William O’Connor\|December 7, 2014\|DAILY BEAST The new term denotes a spectrum of problem drinking that can range from mild to moderate to severe. Americans Drink Too Much, But We’re Not All Alcoholics\|Gabrielle Glaser\|November 25, 2014\|DAILY BEAST On this account it has been customary to say that the red end of the spectrum was the heating end. The Telephone\|A. E. Dolbear Ever since Newton's day it has been fashionable to speak of the spectrum as nature's chart of colors. Elementary Color\|Milton Bradley In subsequent chapters we shall have occasion to consider more fully these different types of spectrum. A Text-Book of Astronomy\|George C. Comstock He filled a glass tube with a solution of sulphate of quinine and then moved it through the spectrum, entering at the red ray. The White Spark\|Orville Livingston Leach It was based on the observed relation between the color of a star and the general character of its spectrum. The Popular Science Monthly, September, 1900\|Various British Dictionary definitions for spectrum spectrum / (ˈspɛktrəm) / noun plural -tra (-trə) the distribution of colours produced when white light is dispersed by a prism or diffraction grating. There is a continuous change in wavelength from red, the longest wavelength, to violet, the shortest. Seven colours are usually distinguished: violet, indigo, blue, green, yellow, orange, and red the whole range of electromagnetic radiation with respect to its wavelength or frequency any particular distribution of electromagnetic radiation often showing lines or bands characteristic of the substance emitting the radiation or absorbing itSee also absorption spectrum, emission spectrum any similar distribution or record of the energies, velocities, masses, etc, of atoms, ions, electrons, etca mass spectrum any range or scale, as of capabilities, emotions, or moods another name for an afterimage Word Origin for spectrum C17: from Latin: appearance, image, from spectāre to observe, from specere to look at Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Words related to spectrum scope, gamut, sphere, range, continuum, rainbow, scale, span, sweep, field, extent, compass, series, colors, distribution, sequence Cultural definitions for spectrum spectrum The range of wavelengths characteristic of a specific type of radiation. notes for spectrum The spectrum making up visible light contains light in the colors violet, indigo, blue, green, yellow, orange, and red, with violet having the shortest wavelength and highest frequency, and red having the longest wavelength and lowest frequency. The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. Medical definitions for spectrum spectrum [ spĕk′trəm ] n. pl. spec•trums The distribution of a characteristic of a physical system or phenomenon, especially the distribution of energy emitted by a radiant source arranged in order of wavelengths. The color image presented when white light is resolved into its constituent colors: red, orange, yellow, green, blue, indigo, violet. The plot of intensity as opposed to wavelength of light emitted or absorbed by a substance, usually characteristic of the substance and used in qualitative and quantitative analysis. The distribution of atomic or subatomic particles in a system, as in a magnetically resolved molecular beam, arranged in order of masses. The group of pathogenic organisms against which an antibiotic or other antibacterial agent is effective. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for spectrum spectrum [ spĕk′trəm ] Plural spectra (spĕk′trə) spectrums A range over which some measurable property of a physical phenomenon, such as the frequency of sound or electromagnetic radiation, or the mass of specific kinds of particles, can vary. For example, the spectrum of visible light is the range of electromagnetic radiation with frequencies between between 4.7 X 1014 and 7.5 X 1014 hertz. The observed distribution of a phenomenon across a range of measurement. See more at atomic spectrum spectroscopy. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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spectrum

noun, plural spec·tra [spek-truh], /ˈspɛk trə/, spec·trums.

Origin of spectrum

Words nearby spectrum

Example sentences from the Web for spectrum

British Dictionary definitions for spectrum

noun plural -tra (-trə)

Word Origin for spectrum

Words related to spectrum

Cultural definitions for spectrum

notes for spectrum

Medical definitions for spectrum

n. pl. spec•trums

Scientific definitions for spectrum

Plural spectra (spĕk′trə) spectrums