saline solution: an isotonic solution of sodium chloride and distilled water
relation: an abstraction belonging to or characteristic of two entities or parts together
ijtihad: the endeavor of a Moslem scholar to derive a rule of divine law from the Koran and Hadith without relying on the views of other scholars; by the end of the 10th century theologians decided that debate on such matters would be closed and Muslim theology and law were frozen