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pion ['paɪɔn] n
phys.sc.	mezon π
English thesaurus
pion ['paɪɔn] abbr.
abbr.	pioneer
pion. abbr.
abbr., nucl.phys.	pi-meson
PION ['paɪɔn] abbr.
abbr., mil., avia.	pioneer
abbr., neurol.	Posterior Ischemic Optic Neuropathy
Pion ['paɪɔn] abbr.
abbr., earth.sc.	pi-meson