WordNet
pi-meson
n. a meson involved in holding the nucleus together; produced as the result of high-energy particle collision [syn: pion]
Usage examples of "pi-meson".
At that time, the ARPL was heavily invested in chemistry and physics-- ion sprays, reversal duplication, pi-meson substrates-- but there was growing interest in biologic problems.
They all seem to be fundamental particles hi that they don't appear to be made up of still simpler entities (as protons, neutrons, and pi-mesons are).