Dec 03 2019 19
Endogenous is an adjective that means originating from within.
The Greek prefix E-N-D-O means ‘from within.’ And Genous (JEN ose) means ‘producing.’ Endogenous is frequently — but not exclusively — used in a scientific or medical context.
The patient didn’t seem to pick up the illness from any outside sources. So we surmised that an endogenous virus was the cause.