precursor

[ pri-kur-ser, pree-kur- ]

/ prɪˈkɜr sər, ˈpri kɜr- /

SEE SYNONYMS FOR precursor ON THESAURUS.COM

noun

a person or thing that precedes, as in a job, a method, etc.; predecessor.

a person, animal, or thing that goes before and indicates the approach of someone or something else; harbinger: The first robin is a precursor of spring.

Chemistry, Biochemistry. a chemical that is transformed into another compound, as in the course of a chemical reaction, and therefore precedes that compound in the synthetic pathway: Cholesterol is a precursor of testosterone.

Biology. a cell or tissue that gives rise to a variant, specialized, or more mature form.

Origin of precursor

1375–1425; late Middle English <Latin praecursor forerunner. See pre-, cursor

SYNONYMS FOR precursor

1 forerunner.

2 herald.

SEE SYNONYMS FOR precursor ON THESAURUS.COM

Words nearby precursor

precordium, precostal anastomosis, precrime, precritical, precuneus, precursor, precursory, precursory cartilage, precut, precycle, pred.

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for precursor

Not only do they come from myriad sources—asphalt is a big one, but paints and other products also release the precursor compounds to pollutants—but the chemical reactions that create these secondary compounds are also complex.
City pavement is a big source of air pollution|Ula Chrobak|September 3, 2020|Popular Science
Continuously monitoring these types of carbon dioxide emissions in the Apennines and other seismically active regions, such as California and Japan, could reveal whether uprising gas is a precursor or product of quakes, he says.
Carbon dioxide from Earth’s mantle may trigger some Italian earthquakes|Maria Temming|August 26, 2020|Science News
SAC is also working on ways to verify the self-reported data behind the scores, as a precursor to making some of the data public next year.
A greener and more compassionate apparel industry|Tate Ryan-Mosley|August 19, 2020|MIT Technology Review
Monkeys’ greater difficulty learning recursive sequences, relative to people, fits a scenario in which “this ability is evolutionarily ancient and could have been a precursor to the development of human grammar,” Ferrigno says.
Monkeys may share a key grammar-related skill with humans|Bruce Bower|June 26, 2020|Science News

Preserving some of the stylized features of its heavy precursor, the lighter Chalcidian helmet was also imbued with practical design upgrades that allowed its wearer to have better hearing and relatively unimpeded vision.
Know Your Ancient Greek Helmets: From Attic to Phrygian|Dattatreya Mandal|May 19, 2020|Realm of History
That convention, though poorly attended, was the precursor to the Constitutional Convention.
Washington’s Wheeler-Dealer Patriotism|William O’Connor|October 31, 2014|DAILY BEAST
It includes a quote from Ehud Olmert, the interim Prime Minister of Israel in 2003, as a precursor to gameplay.
‘Bomb Gaza’ Game Maker: ‘F**k Them All’|Gideon Resnick|August 5, 2014|DAILY BEAST
Here, the blockage of RNA prevents extra amyloid from being produced by targeting its precursor protein and making less of it.
Trial Drug Reverses Alzheimer’s Disease in Mice|Elizabeth Lopatto|May 24, 2014|DAILY BEAST
In fact, of all the precursor awards, the SAG is probably the best indicator of the eventual Oscar winner.
The SAG Awards Best Speeches…And What They Mean for Oscar|Kevin Fallon|January 19, 2014|DAILY BEAST
What could audiences possibly gain from watching Hollywood personnel go through the motions of adhering to an Asian precursor?
What Asian Film Remakes Like ‘Oldboy’ Get Wrong|Jimmy So|November 26, 2013|DAILY BEAST
Perhaps, she told herself, this mood too would pass like its precursor.
Flint|Maud Wilder Goodwin
The chirograph was the precursor of the modern indenture, the commonest form of English deeds, though no longer a tally.
Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 5|Various
This was probably the precursor of Kabul itself, and other "Begrams" are known in India.
The Gates of India|Thomas Holdich
This is the first announcement of a fixed abiding presence of God in the midst of men, and it is therefore the precursor of much.
The Expositor's Bible: The Book of Exodus|G. A. Chadwick
Her human nature can scarcely repress such an exclamation, which is too often but the precursor of her own ruin.
The History of Prostitution|William W. Sanger

British Dictionary definitions for precursor

precursor

/ (prɪˈkɜːsə) /

noun

a person or thing that precedes and shows or announces someone or something to come; harbinger

a predecessor or forerunner

a chemical substance that gives rise to another more important substance

Word Origin for precursor

C16: from Latin praecursor one who runs in front, from praecurrere, from prae in front + currere to run

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for precursor

precursor

[ prĭ-kûr′sər, prē′kûr′sər ]

n.

One that precedes and indicates something to come.

One that precedes another; a forerunner or predecessor.

A biochemical substance, such as an intermediate compound in a chain of enzymatic reactions, that gives rise to a more stable or definitive product.

单词	precursor
释义	precursor [ pri-kur-ser, pree-kur- ] / prɪˈkɜr sər, ˈpri kɜr- / SEE SYNONYMS FOR precursor ON THESAURUS.COM noun a person or thing that precedes, as in a job, a method, etc.; predecessor. a person, animal, or thing that goes before and indicates the approach of someone or something else; harbinger: The first robin is a precursor of spring. Chemistry, Biochemistry. a chemical that is transformed into another compound, as in the course of a chemical reaction, and therefore precedes that compound in the synthetic pathway: Cholesterol is a precursor of testosterone. Biology. a cell or tissue that gives rise to a variant, specialized, or more mature form. Origin of precursor 1375–1425; late Middle English <Latin praecursor forerunner. See pre-, cursor SYNONYMS FOR precursor 1 forerunner. 2 herald. SEE SYNONYMS FOR precursor ON THESAURUS.COM Words nearby precursor precordium, precostal anastomosis, precrime, precritical, precuneus, precursor, precursory, precursory cartilage, precut, precycle, pred. Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for precursor Not only do they come from myriad sources—asphalt is a big one, but paints and other products also release the precursor compounds to pollutants—but the chemical reactions that create these secondary compounds are also complex. City pavement is a big source of air pollution\|Ula Chrobak\|September 3, 2020\|Popular Science Continuously monitoring these types of carbon dioxide emissions in the Apennines and other seismically active regions, such as California and Japan, could reveal whether uprising gas is a precursor or product of quakes, he says. Carbon dioxide from Earth’s mantle may trigger some Italian earthquakes\|Maria Temming\|August 26, 2020\|Science News SAC is also working on ways to verify the self-reported data behind the scores, as a precursor to making some of the data public next year. A greener and more compassionate apparel industry\|Tate Ryan-Mosley\|August 19, 2020\|MIT Technology Review Monkeys’ greater difficulty learning recursive sequences, relative to people, fits a scenario in which “this ability is evolutionarily ancient and could have been a precursor to the development of human grammar,” Ferrigno says. Monkeys may share a key grammar-related skill with humans\|Bruce Bower\|June 26, 2020\|Science News Preserving some of the stylized features of its heavy precursor, the lighter Chalcidian helmet was also imbued with practical design upgrades that allowed its wearer to have better hearing and relatively unimpeded vision. Know Your Ancient Greek Helmets: From Attic to Phrygian\|Dattatreya Mandal\|May 19, 2020\|Realm of History That convention, though poorly attended, was the precursor to the Constitutional Convention. Washington’s Wheeler-Dealer Patriotism\|William O’Connor\|October 31, 2014\|DAILY BEAST It includes a quote from Ehud Olmert, the interim Prime Minister of Israel in 2003, as a precursor to gameplay. ‘Bomb Gaza’ Game Maker: ‘F**k Them All’\|Gideon Resnick\|August 5, 2014\|DAILY BEAST Here, the blockage of RNA prevents extra amyloid from being produced by targeting its precursor protein and making less of it. Trial Drug Reverses Alzheimer’s Disease in Mice\|Elizabeth Lopatto\|May 24, 2014\|DAILY BEAST In fact, of all the precursor awards, the SAG is probably the best indicator of the eventual Oscar winner. The SAG Awards Best Speeches…And What They Mean for Oscar\|Kevin Fallon\|January 19, 2014\|DAILY BEAST What could audiences possibly gain from watching Hollywood personnel go through the motions of adhering to an Asian precursor? What Asian Film Remakes Like ‘Oldboy’ Get Wrong\|Jimmy So\|November 26, 2013\|DAILY BEAST Perhaps, she told herself, this mood too would pass like its precursor. Flint\|Maud Wilder Goodwin The chirograph was the precursor of the modern indenture, the commonest form of English deeds, though no longer a tally. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 5\|Various This was probably the precursor of Kabul itself, and other "Begrams" are known in India. The Gates of India\|Thomas Holdich This is the first announcement of a fixed abiding presence of God in the midst of men, and it is therefore the precursor of much. The Expositor's Bible: The Book of Exodus\|G. A. Chadwick Her human nature can scarcely repress such an exclamation, which is too often but the precursor of her own ruin. The History of Prostitution\|William W. Sanger British Dictionary definitions for precursor precursor / (prɪˈkɜːsə) / noun a person or thing that precedes and shows or announces someone or something to come; harbinger a predecessor or forerunner a chemical substance that gives rise to another more important substance Word Origin for precursor C16: from Latin praecursor one who runs in front, from praecurrere, from prae in front + currere to run Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Words related to precursor forerunner, harbinger, prototype, herald, usher, vanguard, messenger, outrider, predecessor, antecedent, parent, forebear, pioneer, originator, ancestor, original, antecessor, foregoer Medical definitions for precursor precursor [ prĭ-kûr′sər, prē′kûr′sər ] n. One that precedes and indicates something to come. One that precedes another; a forerunner or predecessor. A biochemical substance, such as an intermediate compound in a chain of enzymatic reactions, that gives rise to a more stable or definitive product. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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precursor

noun

Origin of precursor

SYNONYMS FOR precursor

Words nearby precursor

Example sentences from the Web for precursor

British Dictionary definitions for precursor

noun

Word Origin for precursor

Words related to precursor

Medical definitions for precursor

n.