electron pair

noun

1. Chemistry. two electrons occupying the same orbital in an atom or molecule; two electrons working together, especially forming a nonpolar covalent bond between atoms.
2. Physics. an electron and a positron produced in a reaction, as by a high-energy photon.

1. Two electrons functioning or regarded as functioning together, especially two electrons that form a covalent bond between atoms.
2. An electron and a positron produced by a high-energy photon.