Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

exogenous

play
adjective ex·og·e·nous \ek-ˈsä-jə-nəs\

Definition of exogenous

  1. 1 :  produced by growth from superficial tissue <exogenous roots produced by leaves>

  2. 2 a :  caused by factors (as food or a traumatic factor) or an agent (as a disease-producing organism) from outside the organism or system <exogenous obesity> <exogenous psychic depression> <exogenous market fluctuations> b :  introduced from or produced outside the organism or system; specifically :  not synthesized within the organism or system

ex·og·e·nous·ly adverb


Origin of exogenous

French exogène exogenous, from exo- + -gène (from Greek -genēs born) — more at -gen


First Known Use: 1830

Other Microbiology Terms


Medical Dictionary

exogenous

play
adjective ex·og·e·nous \ek-ˈsäj-ə-nəs\

Medical Definition of exogenous

  1. 1:  growing from or on the outside <exogenous spores>

  2. 2:  caused by factors (as food or a traumatic factor) or an agent (as a disease-producing organism) from outside the organism or system <exogenous obesity> <exogenous psychic depression>

  3. 3:  introduced from or produced outside the organism or system; specifically :  not synthesized within the organism or system—compare endogenous

  4. ex·og·e·nous·ly adverb



Variants of exogenous

also ex·o·gen·ic \ˌek-sō-ˈjen-ik\play

Learn More about exogenous


Seen and Heard

What made you want to look up exogenous? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 13, 2016

a trying or distressing experience

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image33683556

How much does a batman (the Turkish unit of measurement) weigh?

2.2 pounds 196.5 pounds 100 pounds 16.96 pounds
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ