[en-doj-uh-nuh s]


proceeding from within; derived internally.
Biology. growing or developing from within; originating within.
Pathology. (of a disease) resulting from conditions within the organism rather than externally caused.
Biochemistry. pertaining to the metabolism of nitrogenous elements of cells and tissues.
Geology. endogenetic.

Origin of endogenous

First recorded in 1825–35; endo- + -genous
Related formsen·do·ge·nic·i·ty [en-doh-juh-nis-i-tee] /ˌɛn doʊ dʒəˈnɪs ɪ ti/, nounen·dog·e·nous·ly, adverb
Can be confusedendogenous indigenous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for endogenous

Historical Examples of endogenous

  • Endogenous stems are those that grow inwardly, from the centre.

  • The exogenous and endogenous hydatids may coexist in the same bearer.


    T. Spencer Cobbold

  • We have in the botanical world the exogenous and the endogenous tree.

  • It is an endogenous tree, and the cambium layer does not obtain.

  • Certain it is that if Federation is to be brought about, the movement must be endogenous.

    Town Life in Australia

    R. E. N. (Richard) Twopeny

British Dictionary definitions for endogenous



biology developing or originating within an organism or part of an organismendogenous rhythms
having no apparent external causeendogenous depression
Derived Formsendogenously, adverbendogeny, noun
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

Word Origin and History for endogenous

1830, from endo- "within" + -genous "producing."

Online Etymology Dictionary, © 2010 Douglas Harper

endogenous in Medicine




Originating or produced within an organism, tissue, or cell.
Caused by factors within the body. Used of a disease.
Related formsen•doge•nous•ly adv.en•doge•ny n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

endogenous in Science



Originating or produced within an organism, tissue, or cell. Compare exogenous.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.