The Flower of Life is the modern name given to a geometrical figure composed of multiple evenly-spaced, overlapping circles. They are arranged to form a flower-like pattern with a sixfold symmetry, similar to a hexagon. The center of each circle is on the circumference of six surrounding circles of the same diameter.
The basic symmetry of the Flower of Life - radiating hexagonally outward from the center and branching off into more hexagonally radiating structures - is also the basic shape of a snowflake. Life originally evolved in water, and all life on Earth requires water as the essential compound of life. Therefore, an additional aspect to the symbolism is to be found in the fact that the geometrical structure of crystallized water is also the basic structure of the Flower of Life.