“A system of medicine practiced in parts of India, thought to be derived via medieval Muslim physicians from Byzantine Greece”
(The Concise Oxford Dictionary)
“Unani (in Arabic, Hindustani, Persian, Pashtu, Urdu etc) means Greek. It is also used to refer to Graeco-Arabic Medicine or Unani medicine (see below) based on the teachings of Hippocrates”
(http://en.wikipedia.org/wiki/Unani – Accessed on 6 July 2007)
Unani is a form of traditional Indian medicine according to which the body is composed of four basic elements (earth, air, water, and fire) and four humors (blood, phlegm, yellow bile, and black bile). Equilibrium in the humors indicates good health while a disturbance in this equilibrium results in disease.