(chemistry, physics) An electron, in an atomic orbital, for which there is no other electron in the same orbital but with opposite spin; a characteristic of free radicals and other reactive species

(physics) A measure of the probability of finding an electron at a specific location within an orbital / (physics) A measure of the number of electrons per unit volume of space.

(physics) The collective states of all electrons in an atom having the same principal quantum number (visualized as an orbit in which the electrons move).

telecottage

plural of electronic cottage

(physics) A nuclear reaction in which an electron (either free, or from the shell of the atom itself) is absorbed into a nucleus, a proton being converted into a neutron in the process

(physics) The energy released when an electron is attached to an atom or molecule; used as a measure of its ability to form an anion

(chemistry) A reducing agent that functions by donating electrons to another compound

(physics) A vacant position in the atomic lattice of a conductor where an electron would normally be present

An experimental musical instrument of the 1940s, having a piano-style keyboard (played with the right hand) and a controller that modified the sound (operated with the left hand).