baryonicadj.
/ˌbarɪˈɒnɪk/, U.S. /ˌbɛriˈɑnɪk/ Particle Physics.
Of the nature of a baryon; relating to or consisting of baryons. baryonic number n. = baryon number n. at baryon n. Compounds.
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baryonic1959
1959 Bull. Inst. Physics 10 140/1 The current solution is to ascribe to both the proton and the neutron a baryonic charge..which is always conserved.
1963 S. Tolansky Introd. Atomic Physics (ed. 5) xxiii. 396 By postulating the conservation of this baryonic number in a closed system then we see that annihilation of protons by electrons is prevented.
1982 New Scientist 9 Sept. 689/3 Matter as we know it (baryonic matter, dominated by neutrons and protons) may make up less than 10 per cent of the gravitational mass of the Universe.
2008 J. Gribbin Galaxies: Very Short Introd. vi. 68 The calculation of the amount of baryonic matter produced in the Big Bang is very straightforward.
This entry has been updated (OED Third Edition, December 2013; most recently modified version published online December 2021).
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adj.1959