noun Physics.
Compare photon.

1940–45; gravit(y) + -on1 Unabridged
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World English Dictionary
graviton (ˈɡrævɪˌtɒn) [Click for IPA pronunciation guide]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Graviton is always a great word to know.
So is slumgullion. Does it mean:
a stew of meat, vegetables, potatoes, etc.
American Heritage
Science Dictionary
graviton   (grāv'ĭ-tŏn')  Pronunciation Key 
The American Heritage® Science Dictionary
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Encyclopedia Britannica


postulated quantum that is thought to be the carrier of the gravitational field. It is analogous to the well-established photon of the electromagnetic field. Gravitons, like photons, would be massless, electrically uncharged particles traveling at the speed of light and would be emitted only by highly accelerating, extremely massive objects such as stars. Since gravitons would apparently be identical to their antiparticles, the notion of antigravity is questionable.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
The first question is to explain if it exists or not the graviton and if the quantum particles are waves or particles.
But there is no graviton, nor any consistent theory of quantum gravity.
Weeks after, graviton returned, having pondered the words of karla.
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