Definition of "protons" [protons]

• Plural form of proton. (noun)

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• "The other two, vastly larger than electrons but still tiny compared with anything we can imagine or experience with our senses, are called protons and neutrons, and they are found in the nucleus."
• "Since the velocity of the protons is near the velocity of light, the stored number of protons can be easily computed."
• "In the 1920's it was known that the nuclei contain protons, in fact the hydrogen nucleus is just a proton, and somehow it was believed that electrons could be involved in keeping the protons together."