Page "Dipole" Paragraph 17

A physical dipole consists of two equal and opposite point charges: in the literal sense, two poles.

Its field at large distances ( i. e., distances large in comparison to the separation of the poles ) depends almost entirely on the dipole moment as defined above.

A point ( electric ) dipole is the limit obtained by letting the separation tend to 0 while keeping the dipole moment fixed.

The field of a point dipole has a particularly simple form, and the order-1 term in the multipole expansion is precisely the point dipole field.