precursor

Etymology

It is inherited from Middle English precursoure,^[2][3][4] borrowed from Latin praecursor (“forerunner, advance guard”),^{[5][2][3][6][7]} and, according to the AHD and Etymonline, also borrowed from Old French precurseur,^[4][3] Middle French in Barnhart,^[2] recorded in French from about 1415, first of John the Baptist.^[5] In post-classical Latin praecursor was often used of John the Baptist, from Tertullian in the late 2nd century on.^[5] It is an agent noun from praecursus, the past participle of praecurrō (“to run ahead, precede”),^[5][4][2][3] from prae- (“before”) and currō (“to run”),^[4][3][8] from Proto-Indo-European *kers- (“to run”).^[4][3] It is related to current, course and cursor.^[2][6][9]

Earliest recorded meaning

A forerunner, a person or thing that comes before another and announces it: before 1460, in Osbern Bokenham's Lives of Saints.^[5][10] Barnhart dates the form precursoure to about 1425,^[2] and Etymonline, which gives the early 15th century, says it was first used of John the Baptist.^[3]

Semantic evolution

From the forerunner who announces something, the word came to mean, especially, a thing that comes before another and leads to its development.^[5][11] Johnson (1755) glossed it "forerunner; harbinger" and quoted Shakespeare's Tempest on lightning as the precursers of thunder.^[12] From 1792 it was also used for a predecessor in an office or role, a sense now rare except as merged with the first.^[5] In 1838 Daniel O'Connell founded the Precursors' Society, which campaigned in Ireland for the repeal of the Union.^[5] Science added the senses of a substance from which another is formed (1884) and of a cell that gives rise to another by differentiation (1895).^[5]

Timeline

• c. 1425 – precursoure, in Barnhart.^[2]
• before 1460 – a forerunner or harbinger.^[5]
• 1792 – a predecessor in an office or role.^[5]
• 1838 – the Precursors, an Irish political society.^[5]
• 1884 – a substance from which another is formed.^[5]
• 1895 – a cell that gives rise to another.^[5]

Meanings

Noun

1. A person or thing that comes before another and often leads to or shapes its development; a forerunner: The abacus was a precursor of the calculator.^[11][13][5]
2. A person or thing that comes before and announces something to come; a harbinger.^[13][5]
3. A predecessor in an office or process.^[11][13][5]
4. (chemistry, biochemistry) A substance from which another is formed, as in a metabolic process.^[11][13][5]
5. (biology, medicine) A cell that gives rise to another by differentiation.^[5]

Word family

• precursory

Related words

• cursor
• current
• course
• precede

References

1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f g Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
3. ^ a b c d e f g Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
4. ^ a b c d e The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
5. ^ a b c d e f g h i j k l m n o p q r s Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
6. ^ a b Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
7. ^ Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
8. ^ Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
9. ^ Ayto, John (2005), Word Origins: The Secret Histories of English Words from A to Z, 2nd ed., London: A & C Black
10. ^ Kay, Christian; Roberts, Jane; Samuels, Michael; Wotherspoon, Irené, eds. (2009), Historical Thesaurus of the Oxford English Dictionary, Oxford: Oxford University Press; online edition (2024)
11. ^ a b c d Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
12. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
13. ^ a b c d Collins English Dictionary (2023), Glasgow: HarperCollins