Is “Pion” a Scrabble word?
Yes
PION
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Pion
/ˈpaɪɒn/
noun
1.Any of three semistable mesons, having positive, negative or neutral charge, composed of up and down quarks/antiquarks.
Synonyms: pi meson