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 (mĕz′ŏn′, mĕs′-, mē′zŏn′, -sŏn′, mā′-)
Any of a class of subatomic particles that are both hadrons and bosons, are composed of a quark and an antiquark, participate in strong interactions, and have masses generally intermediate between those of leptons and baryons.

[meso- + -on.]

me·son′ic (mĕ-zŏn′ĭk, -sŏn′, mē-, mā-) adj.
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Adj.1.mesonic - of or pertaining to a meson; "the radii of the mesic orbits"- Lawrence Wilets
natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"
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References in periodicals archive ?
t] mesonic structure of the 125 GeV particle explains naturally its quite sharp disintegration into two photons.
The proton-neutron interconversion acts to cause a mixing of wave functions and the exchange of a mesonic mediator.
Also, the mesonic atom is an ordinary atom with one or more of its electrons replaced by negative mesons.