Also found in: Thesaurus, Encyclopedia.


Any of a class of subatomic particles that are both hadrons and fermions, are composed of three quarks, participate in strong interactions, and are generally more massive than mesons and leptons. The class of baryons is divided into the nucleons and hyperons.

[Greek barus, heavy; see gwerə- in Indo-European roots + -on.]

bar′y·on′ic adj.


(Atomic Physics) of or relating to a baryon
References in periodicals archive ?
Baryonic matter doesn't match up with all that's there.
5 million low-resolution spectra from the Sloan Extension for Galactic Understanding and Exploration (SEGUE), the Baryonic Oscillations Spectroscopic Survey (BOSS) and the large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST).
e international NICA complex mega-science project is aimed at studying the properties of nuclear matter at the highest baryonic densities in a lab context.
Due to advancements, simulations now include the visible, baryonic matter as well as non-baryonic cold dark matter.
A team led by professor Zhao, in collaboration with the Sloan Digital Sky Survey III (SDSS-III BOSS), which is a survey to measure the spatial distances between luminous galaxies, successfully measured the Baryonic Acoustic Oscillations (BAO) at multiple cosmic epochs with a high precision in 2016.
While drawing an energy balance scientists estimate the universe is composed of 4% normal baryonic (protons and neutrons) matter, 23% dark non-baryonic matter and 73% illusive dark energy.
Intellectually I know it must once have been cosmic baryonic matter also.
Baryonic dark matter could be 'MACHOs' (or 'Massive Astrophysical Compact Halo Objects') like small black holes.
Baryonic matter--the ordinary, visible stuff of the universe including the protons, neutrons and electrons that make up stars and planets--should account for about 17 percent of a galaxy's matter; the rest is invisible dark matter.
Such baryonic jets, composed by heavy matter, are more likely to be powered by the accretion disc rather than the spin of the black hole.
The 60 papers examine such topics as cold compressed baryonic matter with hidden local symmetry and holography, topological and curvature effects in a multi-fermion interaction model, continuum superpartners from supersymmetric unparticles, new regularization in extra dimensional model and renormalization group flow of the cosmological constant, and critical behaviors of sigma-mode and pion in holographic superconductors.