cretaceous

Etymology

It is borrowed from Latin crētāceus (“chalk-like, chalky”), from crēta (“chalk”),^{[2][3][4][5][6]} with the English suffix -ous, as in -aceous.^[2][7][8] The Latin noun was long explained as "Cretan earth", after the island of Crete, a view the American Heritage Dictionary and Collins still give;^[9][10] Klein rejects it and takes it as "sifted earth", with terra (“earth”) understood, from the past participle of cernō (“to sift”), as Weekley did,^[6][11] while Etymonline reports de Vaan's view that the word is more likely related to, or borrowed from, Celtic words for mud and clay such as Old Irish cré, Welsh pridd and Breton pri.^[3] The Latin noun is also the source of crayon, through French craie (“chalk”).^[3][6]

Earliest recorded meaning

Of the nature of chalk, chalky: 1681, in N. Grew's Musæum Regalis Societatis.^[2][12] Barnhart dates it to about 1675, Etymonline to the 1670s.^[4][3]

Semantic evolution

Johnson (1755) defined it as "abounding with chalk; having the qualities of chalk; chalky".^[13] In the early 19th century geologists applied it to the Chalk formation (1831),^[2][3] and then to the period in which the chalk beds were laid down, the last period of the Mesozoic era, after the Jurassic and before the Tertiary.^[2][8][3] The name refers to the wide chalk beds of south-eastern England that were studied in the early years of geology.^[3][14] The noun, the Cretaceous, is recorded from 1851, in Lyell's Manual of Elementary Geology.^[2][4][3] A humorous use for "chalk-like" appears in 1808, in Peter Plymley's Letters.^[2]

Timeline

• 1681 – chalky, of the nature of chalk.^[2][12] Barnhart has about 1675.^[4]
• 1808 – chalk-like, humorously.^[2]
• 1831 – in geology, of the Chalk formation; the Cretaceous period.^[2][3]
• 1851 – noun, the Cretaceous period or system of rocks, in Lyell.^[2][4][3]

Meanings

Adjective

1. Made of or like chalk; chalky.^[10][12][2]
2. (geology, usually capitalized) Of the last period of the Mesozoic era, between the Jurassic and the Tertiary, when much chalk was laid down and the first flowering plants appeared, or of the rocks formed in it.^[10][12][8]

Noun

1. (geology, usually capitalized, with the) The Cretaceous period, or the system of rocks formed in it.^[10][12][2]

Word family

• cretaceously
• noncretaceous
• supercretaceous

Related words

• crayon

Usage notes

In the geological sense the word is usually written with a capital, Cretaceous.^[8][3][10]

References

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