progenitor
Americannoun
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progenitors
plural
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a biologically related ancestor.
a progenitor of the species.
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a person or thing that first indicates a direction, originates something, or serves as a model; predecessor; precursor.
the progenitor of modern painting.
noun
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a direct ancestor
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an originator or founder of a future development; precursor
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of progenitor
1350–1400; Middle English < Latin prōgenitor the founder of a family. See pro- 1, genitor
Explanation
While any ancestor can be a progenitor, or previous member of a family line, the word is usually applied to someone who was an originator of or major contributor to the characteristics of that line. The word progenitor can be traced to the Latin prōgignere, which means "to beget," and so is linked to the beginning of a genealogical line. The clue comes in the "gen" part, meaning "birth, procreation," and signifying the genetic contribution of an ancestor to a family line. Prō- means "forward," and the -tor suffix indicates someone doing an action — so a progenitor is someone who gives rise to a family line.
Vocabulary lists containing progenitor
It's All in the Family
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We the People: Gen
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Silent Spring
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
To begin the repair process, mature liver cells revert toward a fetal-like progenitor state.
From Science Daily ● Aug. 31, 2026
“Jamie taught me what a best friend was,” said second baseman Richie Greenberg, another Feeney progenitor.
From Los Angeles Times ● Jun. 26, 2026
At the same time, the findings challenge previous models that proposed additional diploid progenitor species.
From Science Daily ● Jun. 19, 2026
The researchers then compared how strongly these compounds encouraged neural progenitor cells to become neurons.
From Science Daily ● May 27, 2026
It makes the progenitor of all this group of insecticides, DDT, seem by comparison almost harmless.
From "Silent Spring" by Rachel Carson
Much in the same way Slate was early to formats that would come to dominate digital publishing—explainers, deliberately counterintuitive arguments, chat podcasts—so too were we early progenitors of the internet listicle.
From Slate ● Oct. 7, 2026
"Previous attempts to make hindbrain neurons likely tried to coax forebrain and midbrain progenitors into hindbrain cells, which our study shows is not possible," Jokhai said.
From Science Daily ● Sep. 21, 2026
Those animals were the progenitors of the vast Native American pony herds of later centuries.
From The Wall Street Journal ● Apr. 28, 2026
Its progenitors - who now can generate videos of literally anything in just a few minutes - have the potential to disrupt the lucrative influencer economy.
From BBC ● Dec. 26, 2025
Many of these late-stage fruit trees posed a further problem in that their wild progenitors were the opposite of self-pollinating.
From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
