The Collaborative International Dictionary
exogenous \ex*og"e*nous\, a.
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(Bot.) derived from or originating outside; pertaining to, or having the character of, an exogen; -- the opposite of endogenous.
Syn: exogenetic.
(Bot.) Growing by addition to the exterior; growing by addition of a new external layer of cells on the surface just beneath the bark; -- of plants.
(Anat.) Growing from previously ossified parts; -- opposed to autogenous.
--Owen.(Med.) caused by factors from outside the body, rather than from an abnormality of internal functions; -- of illness.
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(Biol., Biochem.) not synthesized within the organism; absorbed or assimilated from outside the organism.
Exogenous aneurism (Med.), an aneurism which is produced by causes acting from without, as from injury. [1913 Webster] ||