scintillate

Etymology

It is borrowed from Latin scintillō (“to send out sparks, to glitter”), taken from the past-participial stem,^{[2][3][4][5][6][7]} from scintilla (“a spark”).^[2][5][6] Barnhart describes the English verb as formed as if from a Latin *scintillātum.^[8] The further origin of the Latin noun is doubtful: Etymonline reports the traditional derivation from Proto-Indo-European *skai- (“to shine, gleam”) and the phonetic objections to it,^[5] and the Merriam-Webster book of word histories calls it obscure.^[9] The OED compares Middle French scintiller (“to twinkle, of a star”), from about 1377.^[2] A form of the same Latin noun altered in the post-classical period, *stincilla, lies behind tinsel.^[10]

Earliest recorded meaning

To emit sparks or small flashes of light: 1623, in Cockeram's English Dictionarie.^[2][8][6]

Semantic evolution

Etymonline notes that the word was at first used typically of the fixed stars,^[5] and the OED's first quotation specifically for a star's twinkling is from 1747.^[2] Johnson (1755) gave only "to sparkle; to emit sparks".^[11] A figurative use is implied in scintillation by 1751.^[5] From 1828 the verb was used of a person or a person's speech and writing being brilliant,^[2] which the Merriam-Webster book of word histories considers its more frequent use today.^[9] Nuclear physics took it up by 1903, for a phosphor giving a momentary flash when struck by a charged particle,^[2] and by 1968 it was used of a signal that varies rapidly at random.^[2]

Timeline

• 1623 – to emit sparks or small flashes of light.^[2][8][6]
• 1747 – of a star, to twinkle.^[2]
• 1809 – to emit as a spark or sparks; to flash forth.^[2]
• 1810 – to cause to sparkle or twinkle.^[2]
• 1828 – of a person, speech or writing, to be brilliant.^[2]
• 1903 – in nuclear physics, to emit light momentarily when struck by a charged particle or high-energy photon.^[2]
• 1968 – of a signal or its image on a screen, to vary rapidly in a random way.^[2]

Meanings

Verb

1. To give off sparks or quick flashes of light: Sunlight scintillated on the wet rails.^[6][12][2]
2. Of a star, to twinkle.^[6][2]
3. To be lively and brilliant in talk or writing: The host scintillated all through the dinner.^[12][2]
4. (physics) To give off flashes of light when struck by particles or photons.^[12][2]
5. Of a radar or other signal, to vary rapidly at random.^[2]
6. To throw off as sparks or sparkling flashes: She scintillated jokes all evening.^[6][2]

Word family

• scintillatingly
• scintillator
• scintillating
• scintillation

Related words

• scintilla
• stencil
• tinsel

References

1. ^ a b 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 q r s t u Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
4. ^ Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
5. ^ a b c d e Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
6. ^ a b c d e f g Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
7. ^ Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
8. ^ a b c Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
9. ^ a b Merriam-Webster's Book of Word Histories, Springfield, Mass.: Merriam-Webster
10. ^ Ayto, John (2005), Word Origins: The Secret Histories of English Words from A to Z, 2nd ed., London: A & C Black
11. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
12. ^ a b c Collins English Dictionary (2023), Glasgow: HarperCollins