U+222D "∭" Triple Integral Unicode Character

U+222D "∭" Triple Integral is a mathematical symbol that represents the integration of a function over a three-dimensional region, commonly used in fields such as physics, engineering, and multivariable calculus. It extends the concept of a single or double integral to account for volume, often appearing in theorems for flux, divergence, and three-dimensional vector fields. The symbol itself features three integral signs placed closely together, visually indicating the triple nature of the operation.