en pi minus
― IsA ⟶
Weight: 1.0
en pi meson (n) Source: English Wiktionary
en pi plus
― IsA ⟶
Weight: 1.0
en pi meson (n) Source: English Wiktionary
en pi zero
― IsA ⟶
Weight: 1.0
en pi meson (n) Source: English Wiktionary