neutrón
neutron
noun neh-oo-TROHN Rare
Origin: From Latin neuter (neither) + the -on ending of electron/proton, as the particle carries no charge.
Usage Note
Neutrón is masculine in Spanish (el neutrón). Its plural is neutrones, following the regular -ón → -ones pattern. In physics education it is paired with el protón and el electrón to describe atomic structure.
Examples
"El neutrón no tiene carga eléctrica."
Natural Translation
The neutron has no electric charge.

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