"Electron orbits" refers to the paths or routes that electrons take when they move around an atom's nucleus. These orbits indicate the specific energy levels or shells in which electrons exist within an atom. Full definition
The atom had a nucleus with electrons orbiting around it. (religion-online.org)
This would increase the number of energy levels, each corresponding to a certain electron orbit that they can access with their voltage window. (sciencedaily.com)
It's the result of a particular magnetic property of materials — the magnetic moment, a tiny magnetic field produced by electrons orbiting the nucleus of an atom. (sciencemag.org)