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graviton

[ grav-i-ton ]

noun

, Physics.
  1. the theoretical quantum of gravitation, usually assumed to be an elementary particle that is its own antiparticle and that has zero rest mass and charge and a spin of two.

graviton

/ ˈɡrævɪˌtɒn /

noun

  1. a postulated quantum of gravitational energy, usually considered to be a particle with zero charge and rest mass and a spin of 2 Compare photon

graviton

/ grăv′ĭ-tŏn′ /

  1. A hypothetical particle postulated in supergravity theory to be the quantum of gravitational interaction, mediating the gravitational force. Like all force carriers , the graviton is a boson. It is presumed to have an indefinitely long lifetime, zero electric charge, a spin of 2, and zero rest mass (thus travelling at the speed of light). The graviton has never been detected.
  2. See also supersymmetrySee Table at subatomic particle

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Word History and Origins

Origin of graviton1

First recorded in 1940–45; gravit(y) + -on 1

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gravitinogravitropism

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