iatrochemistry, iatrochemical, chemiatry 1. A school of medicine active from 1525 to 1660; it theorized that life, health, and disease were the result of chemical balances, and that disease was to be treated chemically. Its most famous members were Paracelsus, J.B. van Helmont, and de la Boë Sylvius. 2. The study of chemistry in relation to physio... Found on http://www.wordinfo.info/words/index/info/view_unit/2432/5