pi meson en · NOUN
Etymology
From pi (“π”) + meson.
Meanings
-
(dated, formal) A pion, a type of meson.
There were also particles no one had predicted that just appeared. Five of them […, i]n order of increasing modernity, […] are the neutrino, the pi meson, the antiproton, the quark and the Higgs boson.
2012 March-April, Jeremy Bernstein, “A Palette of Particles”, in American Scientist, volume 100, number 2, page 146:
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| π-meson | alternative | lexicographic | |
| pi mesons | Number=Plur | lexicographic | |
| pi-meson | alternative | lexicographic | |
| π meson | alternative | lexicographic |