angular momentum, L

https://doi.org/10.1351/goldbook.A00353
Angular
momentum
, or moment of
momentum
of a particle about a point is a vector quantity equal to the vector product of the position vector of the particle and its
momentum
, L=r×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]