Definition of latent poison (dūṣīviṣa)

A poison that has grown old and decayed, been burnt, struck by lightning, dried in strong sun, exposed to heavy frost or rain, or treated with antidotes, so that its qualities are nearly lost or very weak, is called dūṣīviṣa. A footnote explains that, lodged in the body, it is roused by unsuitable place, season, food and conduct such as day sleep, and only then vitiates the dhātus, having no power to do so by itself.