## Wikipedia - زخم زاوي (ar) angular momentum, $$L$$

https://doi.org/10.1351/goldbook.A00353
Angular @[email protected], or moment of @[email protected] of a particle about a point is a vector quantity equal to the vector product of the position vector of the particle and its @[email protected], $$L=r\times p$$. For special angular momenta of particles in atomic and molecular physics different symbols are used.
Source:
Green Book, 2nd ed., p. 12 [Terms] [Book]