Maṇḍala is a Sanskrit word meaning "circle." In the Buddhist and Hindu religious traditions their sacred art often takes a mandala form, says Wikipedia.
The basic form of most Hindu and Buddhist mandalas is a square with four gates containing a circle with a center point. Each gate is in the shape of a T.[1][2] Mandalas often exhibit radial balance.[3]
These mandalas, concentric diagrams, have spiritual and ritual significance in both Buddhism and Hinduism.[4][5] The term is of Hindu origin.
In common use, mandala has become a generic term for any plan, chart or geometric pattern that represents the cosmos metaphysically or symbolically, a microcosm of the Universe from the human perspective.
The Sand Mandala is a Tibetan Buddhist tradition involving the creation and destruction of mandalas made from colored sand.
A sand mandala is ritualistically destroyed to symbolize the Buddhist doctrinal belief in the transitory nature of material life.