firmament

Etymology

It is inherited from Middle English firmament, also furmament,^[2][1] borrowed from Latin firmāmentum (“a support, a strengthening; in Late Latin, the vault of the sky”).^[3][4][5][6] Hoad, the American Heritage Dictionary and the Oxford Dictionary of English take it through Old French firmament,^[7][8][9] and Etymonline and the Middle English Dictionary allow both routes.^[10][2] The Anglo-Norman noun is recorded from 1113–19, with both "support" and "sky" among its senses.^[11] The Latin noun is from firmō (“to strengthen”), from firmus (“firm”),^[3][4][7] which Etymonline traces to Proto-Indo-European *dher- (“to hold firmly, support”).^[10] In the Vulgate it rendered Ancient Greek στερέωμα (steréōma, “firm or solid structure”) of the Septuagint, from στερεόω (stereóō, “to make firm or solid”), from στερεός (stereós, “firm, solid”),^[3][4][7] which translated Biblical Hebrew רָקִיעַ (rāqīaʿ, “vault of the sky”).^[3][1] This probably means "expanse", from a root, ר־ק־ע (r-q-ʿ), that means "to tread", "to beat out (metals)" and "to spread out" in the Bible; the sense "to make firm or solid", found in Syriac, explains the Greek and Latin renderings.^[3][7][1] Etymonline calls the translation erroneous.^[10]

Earliest recorded meaning

The arch of the sky: about 1250, in The Story of Genesis and Exodus.^[4] Etymonline also dates the word to the mid-13th century, with the sense "expanse of space above the earth where the heavenly bodies move".^[10] The OED's first quotation, from the South English Legendary, is of about 1290.^[3]

Semantic evolution

The sky sense is one the Latin of the classical period did not have: Trench traces it to the Vulgate's rendering of Genesis 1:6, or to Church Latin, and notes that the Greek stressed the firmness of the "sky-tent" while the Hebrew word suggests expansion.^[12] In Middle English it could also mean heaven as the dwelling of God and the angels,^[2][3] and in old astronomy the sphere of the fixed stars, or one of the other celestial spheres.^[3][10][5] Chaucer used it 17 times and Gower 8.^[13] Seventeenth-century scholars such as Bacon and Jeremy Taylor occasionally used the classical sense, that which strengthens or confirms: Taylor called religion "the firmament of laws".^[12][3] That sense and the astronomical one died out,^[3] and Johnson (1755) gives only "the sky; the heavens".^[14] The word is now poetic or rhetorical,^[3][15] and has a figurative use for the sphere of an activity or interest.^[5][3] In West Yorkshire a firmament was a foothold or standing-place.^[16]

Timeline

• c. 1250 – the arch of the sky.^[4] The OED's first quotation is of about 1290.^[3]
• c. 1386 – applied to a celestial sphere other than the fixed stars, in Chaucer's Man of Law's Tale.^[3]
• 1388 – heaven as the place where God dwells.^[3]
• c. 1400 – in old astronomy, the sphere of the fixed stars.^[3] Etymonline dates this use to about 1300.^[10]
• 1526 – transferred and figurative uses.^[3]
• 1554 – a firm support or foundation (obsolete by 1701).^[3]
• 1612 – a term in alchemy, in Jonson's The Alchemist.^[3]

Meanings

Noun

1. The vault or arch of the sky; the heavens; now poetic or rhetorical: A single bright star hung in the firmament.^{[17][5][3][15]}
2. The field or sphere of an interest or activity: the operatic firmament.^[5][3]
3. (archaic) Heaven as the dwelling-place of God.^[3][15][2]
4. (obsolete, c. 1400–1665) In old astronomy, the sphere of the fixed stars, the eighth heaven.^[3][5]
5. (obsolete, 1554–1701) A firm support or foundation.^[3][5]

Word family

• firmamental

Related words

• firm
• affirm
• confirm
• infirm

References

1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d 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)
3. ^ a b c d e f g h i j k l m n o p q r s t u v w x Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
4. ^ a b c d e Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
5. ^ a b c d e f g Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
6. ^ Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
7. ^ a b c d Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
8. ^ The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
9. ^ Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
10. ^ a b c d e f Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
11. ^ Anglo-Norman Dictionary (AND2), Aberystwyth University, anglo-norman.net (2nd ed., 2005–)
12. ^ a b Trench, Richard Chenevix (1859), A Select Glossary of English Words Used Formerly in Senses Different from Their Present, London: John W. Parker
13. ^ Benson, Larry D., Glossarial Concordance to Middle English (Chaucer, Gower), Johns Hopkins University, github.com/jhu-digital-manuscripts/gcme
14. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
15. ^ a b c Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
16. ^ Wright, Joseph, ed. (1898–1905), The English Dialect Dictionary, 6 vols., Oxford: Henry Frowde; via EDD Online 4.0, University of Innsbruck (CC BY 4.0)
17. ^ Collins English Dictionary (2023), Glasgow: HarperCollins