exogenous

[ ek-soj-uh-nuhs ]

/ ɛkˈsɒdʒ ə nəs /

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See synonyms for exogenous on Thesaurus.com

adjective

originating from outside; derived externally.

Botany.

(of plants, as the dicotyledons) having stems that grow by the addition of an annual layer of wood to the outside beneath the bark.
pertaining to plants having such stems.
belonging to the exogens.

Pathology. (of a disease) externally caused rather than resulting from conditions within the organism.

Biochemistry. of or noting the metabolic assimilation of proteins or other metabolites, the elimination of nitrogenous catabolites being in direct proportion to the amount of metabolites taken in.

Geology. exogenetic (def. 1).

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Also exogenetic (for defs. 2-4).

Origin of exogenous

First recorded in 1820–30; exo- + -gen + -ous

OTHER WORDS FROM exogenous

ex·og·e·nism, nounex·og·e·nous·ly, adverb

Words nearby exogenous

exoerythrocytic, ex off., ex officio, exogamy, exogenetic, exogenous, exome, exon, exonarthex, exonerate, exonerated

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use exogenous in a sentence

In early February of 2021, after returning from a difficult race season, I learned that the same sample from September was re-analyzed due to a bio-passport irregularity and found to be positive for an exogenous anabolic steroid.
Katie Compton on USADA Ban: ”I Have Always Been a Clean Athlete”|jversteegh|August 12, 2021|Outside Online
By sleeping in nature the way I do, I not only physically remove myself from exogenous threatening sounds and the demands of my smartphone, but also expose myself to natural light, which results in a better quality of sleep.
A Sleep Storyteller Reveals Her Secrets for Drifting Off Naturally|Phoebe Smith|August 6, 2020|Time
Yes, the record of the 2000s looks better if you treat the bust as some kind of exogenous event caused by overbearing government.
David's Book Club: Unintended Consequences|David Frum|July 3, 2012|DAILY BEAST
But in that case, you also have to treat the real-estate bubble as an exogenous event.
David's Book Club: Unintended Consequences|David Frum|July 3, 2012|DAILY BEAST

Exogenous Structures, in botany, are those which arise from superficial tissues of the parent organ, as stem-branches and leaves.
The New Gresham Encyclopedia|Various
In others, the ordinary exogenous trees predominate, almost to the exclusion of others.
The Story of the Earth and Man|J. W. Dawson
Let us note in this way, in the first place, the introduction of the familiar generic forms of exogenous trees.
The Story of the Earth and Man|J. W. Dawson
The mechanical properties of the stems of trees, both exogenous and endogenous, render them extremely serviceable to mankind.
The Church of England Magazine - Volume 10, No. 263, January 9, 1841|Various
Trees which thus form a new ring of wood every year are called exogenous, or outside-growing.
Outlines of Lessons in Botany, Part I; From Seed to Leaf|Jane H. Newell

British Dictionary definitions for exogenous

exogenous

/ (ɛkˈsɒdʒɪnəs) /

adjective

having an external origin

biology

developing or originating outside an organism or part of an organism
of or relating to external factors, such as light, that influence an organism

psychiatry (of a mental illness) caused by external factors

Derived forms of exogenous

exogenously, adverb

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