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pion
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The answer PION has 62 possible clue(s) in existing crosswords.
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The word PION is VALID in some board games. Check PION in word games in Scrabble, Words With Friends, see scores, anagrams etc.
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Definitions of pion in various dictionaries:
noun - a meson involved in holding the nucleus together
A semistable meson produced either in a neutral form with a mass 264 times that of an electron and a mean lifetime of 8.
adj - a subatomic particle [n -S] : PIONIC
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| Possible Dictionary Clues |
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| A semistable meson produced either in a neutral form with a mass 264 times that of an electron and a mean lifetime of 8.4 10-17 seconds or in a positively or negatively charged form with a mass 273 times that of an electron and a mean lifetime of 2.6 10-8 seconds. Also called pi meson. See Table at subatomic particle. |
| a meson having a mass approximately 270 times that of an electron. |
| a meson involved in holding the nucleus together produced as the result of high-energy particle collision |
| Geographic Matches |
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| pion, Rodhopi, GREECE |
| Pion, Northern, GHANA |
| Pion, Granma, CUBA |
| Pion, Choco, COLOMBIA |
| Pion, Cajamarca, PERU |
| Pion, Cienfuegos, CUBA |
| Pion description |
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In particle physics, a pion (or a pi meson, denoted with the Greek letter pi: ) is any of three subatomic particles: 0, +, and . Each pion consists of a quark and an antiquark and is therefore a meson. Pions are the lightest mesons and, more generally, the lightest hadrons. They are unstable, with the charged pions + and decaying with a mean lifetime of 26.033 nanoseconds (2.6033×108 seconds), and the neutral pion 0 decaying with a much shorter lifetime of 8.4×1017 seconds. Charged pions most often decay into muons and muon neutrinos, while neutral pions generally decay into gamma rays. * The exchange of virtual pions, along with the vector, rho and omega mesons, provides an explanation for the residual strong force between nucleons. Pions are not produced in radioactive decay, but are commonly produced in high energy accelerators in collisions between hadrons. All types of pions are also produced in natural processes when high energy cosmic ray protons and other hadronic cosmic ray com |