The word chemistry comes from the word alchemy which was an earlier set of practices that encompassed elements of chemistry, metallurgy, philosophy, astrology, astronomy, mysticism and medicine. The word alchemy in turn is derived from the Arabic word al-kīmīā (الکیمیاء
. In origin, the term is borrowed from the Greek χημία or χημεία. This may have Egyptian origins since al-kīmīā is derived from the Greek χημία, which is in turn derived from the word Chemi or Kimi, which is the ancient name of Egypt in Egyptian. Ancient Egypt is commonly referred to as 'km.t', Khem (also spelt Chem), the Egyptian word for "black".