dispersion

Etymology

It is inherited from Middle English dispersioun,^[2][3][4] borrowed from Old French dispersion,^[2][3][5] recorded in French from the 13th century,^[2][5] or directly borrowed from Latin dispersiō (“a scattering”).^[5][6][7][8] The Latin noun of action is formed from dispersus, the past participle of dispergō (“to scatter”),^[2][8][3] from dis- (“apart, in every direction”) and spargō (“to scatter”).^[2] The Anglo-Norman noun is recorded from 1278.^[9]

Earliest recorded meaning

The scattering of the Jews among the Gentiles, and the body of Jews so scattered: about 1384, in the early version of the Wycliffite Bible (1 Peter 1).^[5][2][4]

Semantic evolution

The first English sense was the Jewish diaspora, still used as the Dispersion;^[2][5][4] the general sense of scattering, or of being scattered, followed in the early 15th century.^[2][5] Johnson (1755) defined the word as "the act of scattering" and "the state of being scattered", quoting Raleigh's "Noah began from thence his dispersion".^[10] From the 17th century the word was taken into the sciences: diffusion (1664), the spreading of coloured rays of light by a prism in optics (1728), the dispersal of inflammation in medicine (1753), the scatter of values in statistics (1876) and, in physical chemistry, a mixture of one substance finely distributed through another (1915).^[5]

Timeline

• c. 1384 – the Dispersion, the Jews living outside the land of Israel.^[5][2]
• c. 1450 – the act of scattering, the state of being scattered.^[5]
• 1664 – diffusion, spreading.^[5]
• 1728 – optics: the spreading of light of different colours.^[5]
• 1753 – medicine: the removal of inflammation.^[5]
• 1876 – statistics: the scatter of values.^[5]
• 1915 – physical chemistry: a fine mixture of one substance in another.^[5]

Meanings

Noun

1. The act of dispersing or the state of being dispersed; dispersal: the dispersion of the seeds by birds.^[11][3][5]
2. the Dispersion: the Diaspora of the Jews.^[11][3][5]
3. In physics, the separation of light or other electromagnetic radiation into its different wavelengths, as by a prism.^[11][5]
4. In statistics, the degree to which values are scattered about their average.^[11][3][5]
5. In chemistry, a mixture in which very small particles of one substance are spread through another, as in a colloid.^[5]
6. The spreading of troops or vehicles over a wide area to avoid offering a concentrated target.^[3]

Word family

• nondispersion

Related words

• disperse
• dispersal
• diaspora
• sparse
• aspersion
• intersperse

References

1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f g h i Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
3. ^ a b c d e f g Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
4. ^ a b c Kurath, Hans; Kuhn, Sherman M.; Lewis, Robert E., eds. (1952–2001), Middle English Dictionary, Ann Arbor: University of Michigan Press; online edition ed. Frances McSparran et al. (2000–2018)
5. ^ a b c d e f g h i j k l m n o p q r s Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
6. ^ Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
7. ^ Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
8. ^ a b Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
9. ^ Anglo-Norman Dictionary (AND2), Aberystwyth University, anglo-norman.net (2nd ed., 2005–)
10. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
11. ^ a b c d Collins English Dictionary (2023), Glasgow: HarperCollins