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

microscopy carried out using an electron microscope

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

(physics) Any device that produces a stream of electrons, especially a narrow stream that is focused onto a phosphor screen.

A micrograph produced using an electron microscope.

(chemistry, physics) Two electrons having opposite spin but all other quantum numbers the same; i.e two electrons in the same atomic orbital or molecular orbital, especially such electrons that function in concert to form a covalent bond

(idiomatic, dated) the internet

(music) A subgenre of industrial music with low-end drones, harsh loops, and screamed or distorted vocals.

(physics, chemistry) An electron not attached to an atom. / (politics, figuratively) A person who acts independently of the organization to which he or she belongs.

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).