Definition of endogenous
1
: growing or produced by growth from deep tissue
endogenous plant roots
2a
: caused by factors inside the organism or system
suffered from endogenous depression endogenous business cycles
b
: produced or synthesized within the organism or system
an endogenous hormone
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Merriam-Webster unabridged
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Time Traveler for endogenous
The first known use of endogenous was in 1830
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