An electric circuit having at least one component that manipulates the voltage or current in the circuit

(physics) Any of several electronic devices that control electron current through vacuum, gas or vapor between electrodes within a sealed container, usually of glass or metal and often designed to be easily installed in and removed from the equipment in which it is used.

Any source of information available through electronic means, now usually via the Internet.

(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

plural of electronic resource

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

The electron microscopy of sensitive biological materials carried out at low temperature so as to limit damage to the structure of the material being examined

microscopy carried out using an electron microscope

(music) A type of music that employs electronic musical instruments and other electronic technology in its production.

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).