disintegrate

Etymology

It is formed from English dis- + integrate.^{[2][3][4][5][6]} The base verb is from Latin integrō (“to make whole”),^[2][3][7] from integer (“whole, complete”),^[2][3][7] literally “untouched”, from in- (“not”) and the root of tangō (“to touch”), from Proto-Indo-European *tag- (“to touch, handle”).^[3] Webster (1828) derived the English verb directly from the prefix and the Latin noun.^[8]

Earliest recorded meaning

To separate into component parts, to break up: 1794, in the second edition of R. Kirwan's Elements of Mineralogy.^[2] Etymonline and Merriam-Webster Unabridged give 1796,^[3][4] Dictionary.com 1790–1800.^[6] Webster (1828) and the Shorter Oxford quote Kirwan: “Marlites are not disintegrated by exposure to the atmosphere”.^[8][5]

Semantic evolution

The word began in geology, of rocks and minerals breaking up.^[3][2] The Shorter Oxford's quotation from Meredith, “disintegrating the social structure”, shows the extension to things held together only figuratively,^[5] and modern dictionaries record a marriage or a family disintegrating.^[4][9][10] The intransitive use is recorded from 1817 in the OED and by 1851 in Etymonline.^[2][3] Early in the 20th century physics took the word up: Soddy (1904) used it of radioactive substances, and Rutherford (1920) for causing an atom or nucleus to break up.^[2] An adjective disintegrate, meaning disintegrated, was formed separately and is recorded from 1875, in G. MacDonald's Malcolm.^[2] Collins also has a personal sense, to lose judgment or control.^[11]

Timeline

• 1794 – transitive, to separate into component parts, to break up.^[2] Etymonline and Merriam-Webster Unabridged give 1796.^[3][4]
• 1817 – intransitive, to become disintegrated, to break up.^[2] Etymonline has it by 1851.^[3]
• 1873 – to separate or break off as particles from a mass.^[2]
• 1875 – adjective, disintegrated.^[2]
• 1904 – of a nucleus or radioactive substance, to decay.^[2]
• 1920 – to cause an atom or nucleus to undergo disintegration.^[2]

Meanings

Verb

1. To break up into small parts or particles through impact or decay: The old letters disintegrated in the damp cellar.^[10][9][11]
2. To cause something to break up in this way, or to destroy its cohesion.^[4][2][11]
3. To lose cohesion or unity and gradually fail: The coalition disintegrated within a year.^[10][9][11]
4. (physics) Of an atomic nucleus or particle: to undergo radioactive decay or another nuclear change, or to cause this.^[9][11][2]
5. To lose judgment or control; to deteriorate.^[11]

Word family

• disintegrative
• disintegrator
• disintegration

Related words

• integrate
• integer
• integral

References

1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f g h i j k l m n o p Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ a b c d e f g h i Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
4. ^ a b c d e Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
5. ^ a b c Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
6. ^ a b Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
7. ^ a b Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
8. ^ a b Webster, Noah (1828), An American Dictionary of the English Language, New York: S. Converse
9. ^ a b c d The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
10. ^ a b c Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
11. ^ a b c d e f Collins English Dictionary (2023), Glasgow: HarperCollins