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n. Abbr. B
A quantum number equal to the difference between the number of baryons and the number of antibaryons in a system of subatomic particles. The baryon number remains the same throughout any reaction and is one-third of the quark number.
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|Noun||1.||baryon number - a number equal to the difference between the number of baryons and the number of antibaryons in any subatomic structure; it is conserved in all types of particle interactions|
number - a concept of quantity involving zero and units; "every number has a unique position in the sequence"