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WordReference Random House Learner's Dictionary of American English © 2024dis•per•sion /dɪˈspɜrʒən, -ʃən/USA pronunciation n. [uncountable]- dispersal:the dispersion of radioactive particles.
WordReference Random House Unabridged Dictionary of American English © 2024dis•per•sion (di spûr′zhən, -shən),USA pronunciation n. - Also, dispersal. an act, state, or instance of dispersing or of being dispersed.
- Optics
- 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.
- Statisticsthe scattering of values of a variable around the mean or median of a distribution.
- Militarya scattered pattern of hits of bombs dropped under identical conditions or of shots fired from the same gun with the same firing data.
- ChemistryAlso called disperse′ sys′tem. [Physical Chem.]a system of dispersed particles suspended in a solid, liquid, or gas.
- Judaism(cap.) Diaspora (def. 1).
- Latin dispersiōn- (stem of dispersiō), equivalent. to dispers(us) (see disperse) + -iōn- -ion
- Anglo-French)
- Middle English dispersio(u)n (1350–1400
Collins Concise English Dictionary © HarperCollins Publishers:: dispersion /dɪˈspɜːʃən/ n - another word for dispersal
- 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 wavelength
- the degree to which values of a frequency distribution are scattered around some central point, usually the arithmetic mean or median
- a system containing particles dispersed in a solid, liquid, or gas
- the distribution pattern of an animal or a plant population
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