What is growing from previously ossified parts; -- opposed to autogenous. Owen. Exogenous aneurism (Med.), an aneurism which is produced by causes acting from without, as from injury called?

exogenous — (Anat.) Growing from previously ossified parts; -- opposed to autogenous. Owen. Exogenous aneurism (Med.), an aneurism which is produced by causes acting from without, as from injury. (Webster's 1913.)