Definition of hypercharge in English:

hypercharge

Pronunciation /ˈhʌɪpətʃɑːdʒ/

noun

Physics
  • A quantum number which is conserved in strong interactions and that is the same for all the particles of a multiplet, being equal to twice their average charge quantum number; symbol Y.

    The hypercharge Y of a particle is related to its strangeness S and baryon number B by Y = S + B, and is related to its charge Q and the third component, I₃, of isospin by Y = 2(Q − I₃).

Origin

1950s. From hyper- + charge, after hyperonic.