brilliance

Etymology

It is formed from English brilliant + -ance.^{[2][3][4][5][6]} The OED notes that French has no corresponding noun.^[2] The adjective brilliant is from French brillant (“shining, sparkling”), the present participle of briller (“to shine”),^[3][7][4][6] which French took in the 16th century from Italian brillare (“to sparkle”).^[3][8][7][2] The Italian verb is often traced to Vulgar Latin *berillō (“to shine like a beryl”),^[3][6][2] from Latin bēryllus (“beryl”),^[3][7][6] from Ancient Greek βήρυλλος (bḗrullos, “beryl”),^[6][8] but Ayto finds its source not altogether clear,^[8] and Partridge cites the view that it may simply be imitative, like prillare.^[9]

Earliest recorded meaning

Intense or sparkling brightness, lustre, splendour: 1755, in E. Young's Centaur, according to the OED;^[2] Merriam-Webster dates the word to 1748.^[10]

Semantic evolution

The figurative sense, brilliance of mind, wit or talent, followed soon after: Etymonline dates it to 1779,^[3] the OED to 1807, in J. Barlow's Columbiad.^[2][11] It came into English alongside brilliancy, also of the mid 18th century;^[4] the OED notes that the two are largely synonyms, but that brilliancy is more a quality that has degrees, as in comparing the brilliancy of two colours.^[2][3] In music the word is used of a sharp, clear tone,^[7] and in physics it was once a term for luminance.^[12]

Timeline

• 1748 – first known use, according to Merriam-Webster.^[10]
• 1755 – intense or sparkling brightness, in Young's Centaur.^[2]
• 1779 – of wit or intelligence, according to Etymonline.^[3]
• 1807 – figurative use, in Barlow's Columbiad.^[2][11]

Meanings

Noun

1. Great brightness or radiance: the brilliance of the noon sun.^[7][12][2]
2. Exceptional intelligence, talent or skill: the brilliance of her argument.^[7][12][2]
3. Splendour or magnificence.^[7][12]
4. (music) Sharpness and clarity of tone.^[7]
5. (physics) A former term for luminance.^[12]

Word family

• overbrilliance

Related words

• brilliant
• beryl
• beryllium
• brilliancy

References

1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f g h i j k Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ a b c d e f g h Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
4. ^ a b c Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
5. ^ Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
6. ^ a b c d e Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
7. ^ a b c d e f g h The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
8. ^ a b c Ayto, John (2005), Word Origins: The Secret Histories of English Words from A to Z, 2nd ed., London: A & C Black
9. ^ Partridge, Eric (1966), Origins: A Short Etymological Dictionary of Modern English, 4th ed., London: Routledge & Kegan Paul
10. ^ a b Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
11. ^ a b Kay, Christian; Roberts, Jane; Samuels, Michael; Wotherspoon, Irené, eds. (2009), Historical Thesaurus of the Oxford English Dictionary, Oxford: Oxford University Press; online edition (2024)
12. ^ a b c d e Collins English Dictionary (2023), Glasgow: HarperCollins