baryogenesis

noun

bary·​o·​gen·​e·​sis ˌber-ē-ō-ˈje-nə-səs 

ˌba-rē-

: the physical process or processes by which baryons were created in the beginning of the universe

One of the mysteries of modern physics is that there appears to be more matter than antimatter in the Universe. It has been suggested that in the early Universe a process called baryogenesis took place, creating excess matter and breaking the symmetry between matter and antimatter.

—Eugenie Samuel

Word History

Etymology

bary(on) + -o- + genesis

First Known Use

1981, in the meaning defined above