crucible

Etymology

It is inherited from Middle English crusible, also corusible,^[2][3][4] borrowed from Medieval Latin crucibulum (“night lamp; melting pot for metals”).^{[5][6][4][7][8]} Its further origin is uncertain.^[9][2] Hoad, Klein, the Shorter Oxford and the Oxford Dictionary of English derive the Medieval Latin word from Latin crux (“cross”), with the instrumental suffix -bulum;^{[7][10][8][11]} Hoad and the ODE suggest it was first a lamp hanging before a crucifix,^[7][11] Klein a lamp shaped like a cross,^[10] and Skeat a lamp with four nozzles forming a cross.^[12] The OED calls the derivation from crux apparent, and doubts the suggestion of a lamp with crossed wicks.^[5] Barnhart and the American Heritage Dictionary take it rather as a Latinized form of a Romance word like Old French croisuel (“cresset, night lamp”),^[4][13] and Merriam-Webster as a folk-etymological reshaping of that word, influenced by crux and tūribulum (“censer”);^[3][2] Weekley and Etymonline compare Middle High German krūse (“earthen pot”), the source of cruse.^[14][6] It is related to cresset.^[4][13]

Earliest recorded meaning

A vessel made to stand great heat, for melting metals; a melting pot: early 15th century, as crusible.^[6][4] The OED's first record is before 1475, in the Book of Quinte Essence.^[5]

Semantic evolution

In Medieval Latin the word first meant a night lamp, and only later a melting pot, the only sense it has had in English.^[5][6] Johnson (1755) explained that crucibles were so called "because they were formerly marked with a cross".^[15] The figurative sense, a severe test or trial, appears in 1647 in James Howell's letters,^[5] by allusion to the vessel that must endure great heat;^[4] Etymonline and Barnhart date it to the 1640s.^[6][4] In metallurgy it has also meant the hollow at the bottom of a furnace where the molten metal collects, from 1864.^[5]

Timeline

• early 15th century – a melting pot for metals, as crusible.^[6][4] The OED's first record is from before 1475.^[5]
• 1647 – figuratively, a severe test or trial.^[5][6]
• 1841 – verb, to melt in a crucible.^[5]
• 1864 – the basin at the bottom of a furnace where molten metal collects.^[5]

Meanings

Noun

1. A container of refractory material, such as porcelain or graphite, in which substances are heated to very high temperatures: The metal was melted in a clay crucible.^[9][3][5]
2. The hollow at the bottom of a furnace in which molten metal collects.^[9][3][5]
3. A severe test or ordeal.^[9][3][5]

Word family

• crucible steel

Related words

• cresset
• cross
• crucifix
• cruse

References

1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
3. ^ a b c d e Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
4. ^ a b c d e f g h Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
5. ^ a b c d e f g h i j k l m Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
6. ^ a b c d e f g Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
7. ^ a b c Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
8. ^ a b Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
9. ^ a b c d Collins English Dictionary (2023), Glasgow: HarperCollins
10. ^ a b Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
11. ^ a b Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
12. ^ Skeat, Walter W. (1911), A Concise Etymological Dictionary of the English Language, new ed., Oxford: Clarendon Press
13. ^ a b The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
14. ^ Weekley, Ernest (1921), An Etymological Dictionary of Modern English, London: John Murray
15. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.