- the variation of the index of refraction of a transparent substance, as glass, with the wavelength of light, with the index of refraction increasing as the wavelength decreases.
- the separation of white or compound light into its respective colors, as in the formation of a spectrum by a prism.
Origin of dispersion
OTHER WORDS FROM dispersionnon·dis·per·sion, nounpre·dis·per·sion, noun
Words nearby dispersion
How to use dispersion in a sentence
The more technical term is a radiological dispersion device.What is the risk of a nuclear accident in Ukraine? A radiation expert speaks from Kyiv.|Jessica Hamzelou|March 25, 2022|MIT Technology Review
So she worked with local musicians to meticulously track the dispersion of air from instruments with mouthpieces.What science tells us about reducing coronavirus spread from wind instruments|Betsy Ladyzhets|August 6, 2021|Science News
Using measurements of this dispersion, Hagstotz and colleagues estimated the distances to nine FRBs.Fast radio bursts could help solve the mystery of the universe’s expansion|Mara Johnson-Groh|April 21, 2021|Science News
This resulted in an unprecedented dispersion of property ownership.In the Future We'll All Be Renters: America's Disappearing Middle Class|Joel Kotkin|August 10, 2014|DAILY BEAST
Egyptian president Morsi prays fervently in front row as an imam calls for the dispersion of the Jews.
Geographical dispersion also presents cheating opportunities.
Here are four distinct predictions; national peculiarity, grievous oppression, universal dispersion and remarkable preservation.Gospel Philosophy|J. H. Ward
The dispersion of the gusts shakes the streaming locks of the wind upon the four corners of the horizon.Toilers of the Sea|Victor Hugo
In February, 1778, there was almost a famine in the camp, and Washington feared a general mutiny and dispersion.The Political History of England - Vol. X.|William Hunt
The elaboration of the meanings of the Swastika indicated above and its dispersion or migrations form the subject of this paper.The Swastika|Thomas Wilson
The camp was stormed, and with the dispersion of its defenders the revolt came suddenly to an end.History of the English People, Volume VIII (of 8)|John Richard Green
British Dictionary definitions for dispersion (1 of 2)
- the separation of electromagnetic radiation into constituents of different wavelengths
- a measure of the ability of a substance to separate by refraction, expressed by the first differential of the refractive index with respect to wavelength at a given value of wavelengthSymbol: D
- the range of speeds of such objects as the stars in a galaxy
- the frequency-dependent retardation of radio waves as they pass through the interstellar medium
- the deviation of a rocket from its prescribed path