endogenous

[en-doj-uh-nuhs]
adjective
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:
1825–35; endo- + -genous

endogenicity [en-doh-juh-nis-i-tee] , noun
endogenously, adverb

endogenous, indigenous.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
endogenous (ɛnˈdɒdʒɪnəs)
 
adj
1.  biology developing or originating within an organism or part of an organism: endogenous rhythms
2.  having no apparent external cause: endogenous depression
 
en'dogenously
 
adv
 
en'dogeny
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

endogenous
1830, from endo- + -genous "producing."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

endogenous en·dog·e·nous (ěn-dŏj'ə-nəs)
adj.

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

  2. Caused by factors within the body. Used of a disease.


en·dog'e·nous·ly adv.
en·dog'e·ny n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
endogenous   (ěn-dŏj'ə-nəs)  Pronunciation Key 
Originating or produced within an organism, tissue, or cell. Compare exogenous.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Some of it is exogenous to the collective decisions of firms, some of it is
  endogenous.
The reason is almost certainly the effects of endogenous opioids, better known
  as endorphins.
No, because the maximum length of unemployment insurance is itself an
  endogenous variable.
They did so because someone has said that a true business cycle theory would be
  endogenous and not include money.
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