A hypothetical indivisible unit of time, similar to how an atom is the smallest unit of matter, used in theoretical physics.
From Greek chronos (time) combined with the suffix -on, following the pattern of physics particles like photon, electron, and proton. Coined in the mid-20th century.
A chronon would be the smallest possible moment that could ever exist—like asking 'how thin can you slice time?'—and if chronons are real, they might explain some of the deepest mysteries of quantum mechanics!
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