Definitions of electron

  1. an elementary particle with negative charge Scrapingweb Dictionary DB
  2. One of those particles, having about one thousandth the mass of a hydrogen atom, which are projected from the cathode of a vacuum tube as the cathode rays and from radioactive substances as the beta rays; -- called also corpuscle. The electron carries (or is) a natural unit of negative electricity, equal to 3.4 x 10-10 electrostatic units. It has been detected only when in rapid motion; its mass, which is electromagnetic, is practically constant at the lesser speeds, but increases as the velocity approaches that of light. Electrons are all of one kind, so far as known, and probably are the ultimate constituents of all atoms. An atom from which an electron has been detached has a positive charge and is called a coelectron. Webster Dictionary DB
  3. One of the components of atoms; the smallest known component of matter; an electrical unit. The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919.
  4. The electric charge of an atom; believed to exist as a separate entity. The Concise Standard Dictionary of the English Language. By James Champlin Fernald. Published 1919.

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Usage examples for electron

  1. Electron had tried with Phoenix. – Underground by Suelette Dreyfus
  2. We will suppose the same of matter in its elemental form, known as the atom, and we will venture also to assert that force is a substance like matter, but a thousand times more refined and invisible than the atom, and we will call it the electric ion, or electron – The Universe a Vast Electric Organism by George Woodward Warder