DMT, short for Dimethyltryptamine, is a compound secreted by the pineal gland of the human brain.DMT, short for Dimethyltryptamine, is a compound secreted by the pineal gland of the human brain <a href="http://www.boldsky.com/yoga-spirituality/thought/2014/facts-about-dmt-040274.html" target="_blank">Know More</a>.