Protons

Stable elementary particles having the smallest known positive charge, found in the nuclei of all elements. The proton mass is less than that of a neutron. A proton is the nucleus of the light hydrogen atom, i.e., the hydrogen ion.

Year introduced: 1966

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Tree Number(s): D01.248.497.300.459.700, D01.268.406.750, D01.362.340.750, G01.249.660.500

MeSH Unique ID: D011522

Entry Terms:

• Proton
• Hydrogen Ions
• Hydrogen Ion
• Ion, Hydrogen
• Ions, Hydrogen

All MeSH Categories
Chemicals and Drugs Category
Inorganic Chemicals
Electrolytes
Ions
Cations
Cations, Monovalent
Protons

All MeSH Categories
Chemicals and Drugs Category
Inorganic Chemicals
Elements
Hydrogen
Protons

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Chemicals and Drugs Category
Inorganic Chemicals
Gases
Hydrogen
Protons

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Phenomena and Processes Category
Physical Phenomena
Elementary Particles
Nucleons
Protons