The DMA of Stone decomposes a molecular charge density into atom-centered electric multipoles. It is a rapidly convergent expansion of the charge density that describes it accurately and in great detail. The expansion here employed was truncated at the electric quadrupole term, and its three first terms have a straight chemical interpretation. The monopole (in units of the fundamental charge 𝑒 = 1,602 × 10 A*B C) represents a localized charge in an atom, with different atoms in a bond displaying some degree of charge separation. Dipole atomcentered moment vectors (in atomic units of 𝑒𝑎 # , where 𝑎 # is the Bohr radius) are represented by a vector pointing from a negative charge to a positive one of the same magnitude that describes an atom-centered charge displacement. Depending on the electronegativities of the involved atoms and the remaining bond environment, bond densities can produce significant atom-centered dipoles. An isolated atom has a perfectly spherical electron cloud, hence no dipole. Finally, the last term of the DMA atom-centered expansion is the electric quadrupole (in units of 𝑒𝑎 # ' ), which is the first electrostatic moment to include contributions from out-of-plane density. For this reason, it is associated with delocalized 𝜋 electrons and lone pairs of electrons. Given that the quadrupole moment is a tensor, it is represented here by a number that corresponds to the square root of the sum of all components of the tensor squared.