1. endobiotic - Noun
2. endobiotic - Adjective
(of a parasite or symbiont) living within the tissues of a host.
(medicine) Originating within an organ or biological system.
endobiotic (plural endobiotics)
(medicine) An endogenous substance that influences the functioning of an organ or biological process.
Endobiotic symbionts were common in the corals and stromatoporoids. citation citation Reef abundance was patchy; sometimes fossils are frequent but at other points are virtually absent from the rock record. Source: Internet