<p><strong>Noun</strong></p><ul><li>Pertaining to autochthons; aboriginal; indigenous (heterochthonous).</li><li>Found in the part of the body in which it originates, as a cancerous lesion.</li><li>Found in a locality in which it originates, as an infectious disease.</li><li>Of or relating to ideas that arise independently of the individual's own train of thought and seem instead to have some alien or external agency as their source.</li><li>(Of rocks, minerals, etc.) formed in the region where found.</li></ul>