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Pronunciation varies by accent · noun
(particle physics) The negative pion, composed of a down quark and an anti-up quark..
Use pi-minus when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Pi-minus means (particle physics) The negative pion, composed of a down quark and an anti-up quark..
Common synonyms include pi-minus meson, negative pion.
The opposite depends on the specific sense.
Use pi-minus where its definition matches the intended context.
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