<p><strong>Adjective</strong></p><ul><li>Geology.<ul><li>Noting or pertaining to a period of the Paleozoic Era, 405 to 345 million years ago, characterized by the dominance of fishes and the advent of amphibians and ammonites.</li><li>Of or relating to Devonshire, England.</li></ul></li></ul><p><strong>Noun</strong></p><ul><li>Geology.<ul><li>The Devonian Period or System.</li></ul></li></ul><p><strong>End of Response</strong></p>