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Ontology Browser

Parent Terms Term With Siblings Child Terms
pi meson +    
pi(+) meson 
pi(-) meson 
pi(0) meson 
A subatomic particle of zero charge, zero spin and rest mass of 0.1449008(9) u, or 134.9743(8) MeV.

Related Synonyms: neutral pion ;   pi(0)

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