Definitions

1. adjective

relating to or consisting of baryons, which are subatomic particles that are made up of three quarks

“The universe contains a vast array of baryonic matter, but scientists are still searching for dark matter.”

2. noun

matter that is composed of baryons, such as protons and neutrons

“The baryonic universe is thought to have formed from the decay of a primordial soup of particles.”