origin

noun6

1. •
   a point in time or place where something first begins

   • The custom has its origin in ancient Greece.
   • Scientists are studying the origin of the universe.
2. •
   The source of a river, information, goods, etc.
3. •
   [in the plural] Ancestry.
4. •
   The point at which the axes of a coordinate system intersect.
5. •
   An arbitrary point on Earth's surface, chosen as the zero for a system of coordinates.
6. •
   The proximal end of attachment of a muscle to a bone that will not be moved by the action of that muscle.