A hypothetical boson having no charge or spin and small mass, proposed to explain the existence of certain symmetries of the strong nuclear force.
A hypothetical subatomic particle thought to be a lightweight, electrically neutral boson essential to the strong interaction.
Webster's New World
(physics) A hypothetical subatomic particle postulated to explain some symmetry problems arising in the strong nuclear force.
Other Word Forms of Axion
Origin of Axion
Named by Frank Wilczek after Axion, a brand of laundry detergent, for its -on suffix and the notion that the new particle could "clean up" a problem in physics.
From American Heritage Dictionary of the English Language, 5th Edition
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