pion

/pahy-on/US // ˈpaɪ ɒn //UK // (ˈpaɪɒn) //

狮子座,狮子头,狮子座的人,狮子会

Definitions

n.名词 noun

1
Physics.
- : the first meson to be discovered: it has spin 0 and may be positively or negatively charged or neutral; charged pions decay into a muon and a neutrino or antineutrino. Symbol: π

Specifically, the proton morphs into a neutron and a pion made of one up quark and one down antiquark.
The pion saplings, which the dancers also pretended to swallow, had no deceptive arrangement.
In reality, each boy is an unpaid pion, a watchdog whose vigilance never relaxes.
Pion; A certaine great, round, and Bulbus-rooted flower, of one whole colour.
Close at hand was a pion tree, which spread out low-growing branches all about.
Both the pion and the camass are largely utilized even at the present day for food by the Indians.