[en-doj-uh-nuh s]
  1. proceeding from within; derived internally.
  2. Biology. growing or developing from within; originating within.
  3. Pathology. (of a disease) resulting from conditions within the organism rather than externally caused.
  4. Biochemistry. pertaining to the metabolism of nitrogenous elements of cells and tissues.
  5. 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. 2018

British Dictionary definitions for endogenously


  1. biology developing or originating within an organism or part of an organismendogenous rhythms
  2. 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 endogenously



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

Online Etymology Dictionary, © 2010 Douglas Harper

endogenously in Medicine


  1. Originating or produced within an organism, tissue, or cell.
  2. 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.

endogenously in Science


  1. 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.