magic circle

English

Noun

magic circle (plural magic circles)

1. (magic) A circle marked by a practitioner of magic, used as magical protection or to form a magical area.
2. (mathematics) An arrangement of natural numbers on circles such that the sum of the numbers on each circle and the sum of numbers on diameter are identical.
3. (video games) The imagined boundary that separates the player's immersion in virtual reality from the real world.

Coordinate terms

• mandala