"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)