ex·​og·​e·​nous | \ ek-ˈsä-jə-nəs How to pronounce exogenous (audio) \

Definition of exogenous

1 : produced by growth from superficial tissue exogenous roots produced by leaves
2a : caused by factors (such as food or a traumatic factor) or an agent (such as a disease-producing organism) from outside the organism or system exogenous obesity exogenous psychic depression exogenous market fluctuations
b : introduced from or produced outside the organism or system specifically : not synthesized within the organism or system

Keep scrolling for more

Other Words from exogenous

exogenously adverb

Examples of exogenous in a Sentence

Recent Examples on the Web Both Covid-19 and climate change are, as my colleagues Jess Shankleman and Ewa Krukowska point out, what economists call exogenous shocks—factors that re-shape a system. Josh Petri, Bloomberg.com, "Climate and Pandemic Models Speak Louder Than Words," 12 May 2020 In some respects, exogenous shocks sow even more fear and uncertainty than traditional financial crises, because investors have no experience to draw on. David Enrich, New York Times, "Spiraling Virus Fears Are Causing Financial Carnage," 10 Mar. 2020 But Comen says evidence on breast cancer in trans women is still evolving and recommends any patient taking exogenous estrogen talk with their doctor about their unique concerns. Ashley Abramson, Allure, "Everything You Should Know About Breast Cancer Signs, Treatment, and More," 10 Mar. 2020 But it’s also extended scientists an opportunity to research the transition as a virus goes from exogenous (external) to endogenous (built into the genome), a process that hasn’t played out in humans in hundreds of thousands of years. Andrew Joseph, Scientific American, "What a Koala Virus Tells Us about the Human Genome," 14 Oct. 2019 And a 2012 case report involved a woman who developed a condition called exogenous lipoid pneumonia after vaping for about six months. NBC News, "What is in a vape? Everything you need to know," 3 Sep. 2019 However, given how fragile the Chinese economy already is, any negative exogenous shock – even in the form of a tweet or two – can tip the boat over. Washington Post, "Value Investing Is Back in China, Thanks to Donald Trump," 19 Sep. 2019 The problem with that argument is straightforward: The emissions goal is not fixed or exogenous. Benjamin Zycher, National Review, "The Confusions of the ‘Conservative’ Carbon Tax," 8 July 2019 And also, when thinking about forecasts, right, the policy path is not exogenous to the forecast, right? Nick Timiraos, WSJ, "Cleveland Fed’s Mester Expects Higher Rates, But Sees No Urgency," 7 Jan. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'exogenous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of exogenous

1830, in the meaning defined at sense 1

History and Etymology for exogenous

French exogène exogenous, from exo- + -gène (from Greek -genēs born) — more at -gen

Keep scrolling for more

Learn More about exogenous

Time Traveler for exogenous

Time Traveler

The first known use of exogenous was in 1830

See more words from the same year

Statistics for exogenous

Last Updated

18 May 2020

Cite this Entry

“Exogenous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/exogenous. Accessed 7 Jul. 2020.

Keep scrolling for more

More Definitions for exogenous


ex·​og·​e·​nous | \ ek-ˈsäj-ə-nəs How to pronounce exogenous (audio) \
variants: also exogenic \ ˌek-​sō-​ˈjen-​ik How to pronounce exogenic (audio) \

Medical Definition of exogenous

1 : growing from or on the outside exogenous spores
2 : caused by factors (as food or a traumatic event) or an agent (as a disease-producing organism) from outside the organism or system exogenous obesity exogenous depression
3 : introduced from or produced outside the organism or system specifically : not synthesized within the organism or system — compare endogenous

Other Words from exogenous

exogenously adverb

More from Merriam-Webster on exogenous

Rhyming Dictionary: Words that rhyme with exogenous

Britannica English: Translation of exogenous for Arabic Speakers

Comments on exogenous

What made you want to look up exogenous? Please tell us where you read or heard it (including the quote, if possible).


See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

A More Exception(al) Quiz

  • hot dog  hot dog  hot dog  hot dog cat
  • Which of the following words is not a synonym for ‘a young person’?
Spell It

Can you spell these 10 commonly misspelled words?

Syn City

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!