Etymologically
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expanse

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Pronunciation

  • UK: /ɪkˈspæns/, /ɛkˈspæns/[1]
  • US: /ɪkˈspæns/[1]

Etymology

It is borrowed from New Latin expānsum (“firmament”),[2][3][4][5] a noun use of the neuter of Latin expānsus (“spread out”),[6][7][8][9] the past participle of expandō (“to spread out”), the source of expand.[6][2][10] The verb is formed from ex- (“out”) and pandō (“to spread, stretch”), from a nasalized form of Proto-Indo-European *pete- (“to spread”).[6] Scholars of the 16th and 17th centuries took up the Latin word as a literal rendering of the Hebrew word for the firmament that the Vulgate translates firmāmentum and the King James Bible firmament.[7]

Earliest recorded meaning

A wide space or area, and especially the firmament or sky: Merriam-Webster dates the noun to 1637,[2] and the OED to 1667, in Milton's Paradise Lost, in both senses.[7] Etymonline dates it to the 1660s.[6] The form expansum itself is recorded in English from 1635.[7]

Semantic evolution

Milton used it for the heavens, and Johnson (1755) quoted Paradise Lost for "th' expanse of heav'n", defining the word as a body widely extended without inequalities.[11][7] The sense "firmament" is now archaic;[3][2] the word is mostly used of a wide, unbroken stretch of land, water or sky.[4][2] From 1860 it also meant the action of expanding, or expansion.[7][4] Earlier, English had used expanse as an adjective, in Chaucer's Franklin's Tale of tables giving a planet's motion over single years (about 1405 to 1500), and as a verb meaning to expand (1477 to 1721).[7][3]

Timeline

  • c. 1405 – adjective, of astronomical tables, in Chaucer (obsolete by 1500).[7]
  • 1477 – verb, to expand (obsolete by 1721).[7]
  • 1635 – expansum, the firmament.[7]
  • 1637 – noun, a wide space or extent.[2] The OED's first record is from 1667, in Milton's Paradise Lost, also for the firmament.[7]
  • 1860 – the action of expanding; expansion.[7]

Meanings

Noun

  1. A wide, unbroken stretch of something, such as land, sea or sky: an expanse of open moorland.[4][2][7]
  2. Expansion or extension.[4][7]
  3. (archaic) The firmament.[2][3][7]

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  3. ^ a b c d Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  4. ^ a b c d e Collins English Dictionary (2023), Glasgow: HarperCollins
  5. ^ Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
  6. ^ a b c d Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  7. ^ a b c d e f g h i j k l m n o Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  8. ^ The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
  9. ^ Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
  10. ^ Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
  11. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.