Search Result for "pi-meson": 
Wordnet 3.0

NOUN (1)

1. a meson involved in holding the nucleus together; produced as the result of high-energy particle collision;
[syn: pion, pi-meson]



WordNet (r) 3.0 (2006):

pi-meson
    n 1: a meson involved in holding the nucleus together; produced
         as the result of high-energy particle collision [syn:
         pion, pi-meson]