<p><strong>Adjective</strong></p><ul><li>Proceeding from within; derived internally.</li><li>Biology: Growing or developing from within; originating within.</li><li>Pathology: (Of a disease) resulting from conditions within the organism rather than externally caused.</li><li>Biochemistry: Pertaining to the metabolism of nitrogenous elements of cells and tissues.</li><li>Geology: Endogenetic.</li></ul>