Where does “pionless” come from?

pionless (English) comes from English pion, from English Pi, from Ancient Greek πῖ, from Ancient Greek πεῖ, from Proto-Semitic pay- — the mouth.

pionless (English): Lacking pions

Definitions

  1. Lacking pions

Ancestry of “pionless”, step by step

pionless traces back through two separate lines of ancestry.

via English pion

StepLanguageWordMeaning
1EnglishpionAny of three semistable mesons, having positive,...
2EnglishPiThe sixteenth letter of the Classical and Modern Greek alphabets and the seventeenth in Old Greek
3Ancient GreekπῖAlternative form of πεῖ
4Ancient Greekπεῖpi, the name for the sixteenth letter Π, π of the...
5Proto-Semiticpay-the mouth

via English less

StepLanguageWordMeaning
1EnglishlessTo a smaller extent or degree; comparative form...
2Middle Englishlesfalse; lying; deceptive; falsehood; a lie
3Old Englishlēasfalse, lax; false, void, loose; devoid of, loose...
4Proto-Germanic*laus
Every word from Proto-Semitic pay-