exogenous

[ek-soj-uh-nuhs]
adjective
1.
originating from outside; derived externally.
2.
Botany.
a.
(of plants, as the dicotyledons) having stems that grow by the addition of an annual layer of wood to the outside beneath the bark.
b.
pertaining to plants having such stems.
c.
belonging to the exogens.
3.
Pathology. (of a disease) externally caused rather than resulting from conditions within the organism.
4.
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.
5.
Geology, exogenetic ( def 1 ).
Also, exogenetic (for defs 2–4).


Origin:
1820–30; exo- + -gen + -ous

exogenism, noun
exogenously, adverb
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
exogenous (ɛkˈsɒdʒɪnəs)
 
adj
1.  having an external origin
2.  biology
 a.  developing or originating outside an organism or part of an organism
 b.  of or relating to external factors, such as light, that influence an organism
3.  psychiatry (of a mental illness) caused by external factors
 
ex'ogenously
 
adv

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Etymonline
Word Origin & History

exogenous
Mod.L. exogenus, on model of indigenus (see indigenous).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

exogenous ex·og·e·nous (ěk-sŏj'ə-nəs)
adj.

  1. Originating or produced outside of an organism, a tissue, or a cell.

  2. Having a cause external to the body. Used of diseases.


ex·og'e·nous·ly adv.
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
exogenous   (ěk-sŏj'ə-nəs)  Pronunciation Key 
Originating or produced from outside an organism, tissue, or cell. Compare endogenous.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
So endogenous retroviral elements have provided a defense mechanism against
  exogenous retroviruses.
Some of it is exogenous to the collective decisions of firms, some of it is
  endogenous.
We know that exogenous chemicals mimic neurotransmitters and modulators.
Rather, it was an exogenous result of mistakes made by bankers in other
  countries.
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