The Kulliyat (Arabic: الـكـلّـيـات في الـطـب, romanized: al-Kulliyāt fi al-ṭibb, lit. 'The General Principles of Medicine'), mostly known by its Latin translation as Colliget, is a medical encyclopedia written by the Andalusian polymath Averroes.[1] The title of the book is opposite to "The Specificities of Medicine" (Arabic: جزئیات في الـطـب, romanized: al-Juzʾiyyāt fi al-ṭibb), which was written by his friend ibn Zuhr. The two collaborated, intending that their books complement each other.[2] Written between 1153 and 1169, the Colliget was eventually translated into Medieval Hebrew and Latin and became a widely used textbook in Europe until the 18th century.[3]