Look up: POSITRON

1. Positron
   A Nuclear particle with the mass of an electron but opposite charge.
   Found on http://home.nas.net/~dbc/cic_hamilton/di
   
   
2. Positron
   The positron has properties which are identical to those of a negatively charged Electron , except that it has a positive charge. Positrons are unstable in matter and disappear by Annihilation with negatively charged electrons. This produces two Gamma Rays , each of 0.511 MeV which move in opposite ...
   Found on http://www.ionactive.co.uk/glossary.html
   
   
3. positron
   [n] - an elementary particle with positive charge
   Found on http://www.webdictionary.co.uk/definitio
   
   
4. Positron
   See Beta Particle.
   Found on http://www.encyclo.co.uk/local/20474
   
   
5. Positron
   The antiparticle of the electron. Discovered by Anderson in 1931. See also: Antiparticle, Blackett, Patrick Maynard Stuart, Electron, Electron-Positron Annihilation.
   Found on http://www.diracdelta.co.uk/science/sour
   
   
6. Positron
   A Nuclear particle with the mass of an electron but opposite charge.
   Found on http://www.allchemicals.info/index/actio
   
   
7. positron
   Positron is the antiparticle of the electron. It has the same mass and spin as an electron, and an equal but opposite charge.
   Found on http://www.ktf-split.hr/periodni/en/abc/
   
   
8. positron
   elementary particle with approximately the same mass as the electron but with a positive elementary charge Category: Physics
   Found on http://www.mijnwoordenboek.nl/definition
   
   
9. positron
   A subatomic particle of mass and charge equal to the electron but of opposite (i.e., positive) charge. ... Synonym: positive electron. ... (05 Mar 2000) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
10. positron
    antielectron noun an elementary particle with positive charge; interaction of a positron and an electron results in annihilation
    Found on http://wordnetweb.princeton.edu/perl/web
    
    
11. positron
    (poz´ĭ-tron) the antiparticle of the electron. When a positron is emitted by a radionuclide it combines with an electron and both undergo annihilation, producing two 511-keV gamma rays traveling in opposite directions. This effect is used in positron emission tomography.
    Found on http://www.encyclo.co.uk/local/21001
    
    
12. positron
    positively charged subatomic particle having the same mass and magnitude of charge as the electron and constituting the antiparticle of a negative ... [24 related articles]
    Found on http://www.britannica.com/eb/a-z/p/99
    
    
13. positron
    positron, antielectron 1. An elementary particle having the same mass and magnitude of charge as an electron but exhibiting a positive charge; a positive electron. 2. A positively charged particle of the same mass and magnititude of charge as an electron; a positive electron.
    Found on http://www.wordinfo.info/words/index/inf
    
    
14. Positron
    The antiparticle of the electron. It has the same mass as the electron but opposite (positive) electrical charge.
    Found on http://www-bdnew.fnal.gov/operations/acc
    
    
15. Positron
    The antiparticle of the electron. It has the same mass as the electron but opposite (positive) electrical charge.
    Found on http://www-bdnew.fnal.gov/operations/acc
    
    
16. positron
    elementary particle with one positive elementary electric charge and the same rest mass as the electron
    Found on http://www.electropedia.org/iev/iev.nsf/
    
    
17. positron
    elementary particle with one positive electric charge of +e and the same rest mass as the electron
    Found on http://www.electropedia.org/iev/iev.nsf/
    
    
18. positron
    an electron with positive charge
    Found on http://www.electropedia.org/iev/iev.nsf/
    
    
19. positron
    positron: see antiparticle.
    Found on http://www.infoplease.com/ce6/sci/A09176
    
    
20. Positron
    A positron is a positively-charged particle of the same mass as the electron and with a charge equivalent but opposite in sign to that of the electron.
    Found on http://www.probertencyclopaedia.com/brow
    
    
21. positron
    (β+) Type: Term Pronunciation: poz′i-tron Definitions: 1. A subatomic particle of mass and charge equal to the electron but of opposite (positive) charge. Synonyms: positive electron
    Found on http://www.medilexicon.com/medicaldictio
    
    
22. positron
    Antiparticle of the electron; an elementary particle having the same mass as an electron but exhibiting a positive charge. The positron was discovered in 1932 by US physicist Carl Anderson at the California Institute of Technology, USA, its existence having been predicted by the British physicist Paul Dirac in 1928
    Found on http://www.talktalk.co.uk/reference/ency
    
    
23. Positron
    Antiparticle of the electron.
    Found on http://www2.slac.stanford.edu/vvc/glossa
    
    
24. Positron
    An Anti-electon.The positively-charged antiparticle of anelectron.
    Found on http://hepwww.rl.ac.uk/public/phil/gloss
    
    
25. Positron
    Antiparticle of the electron.
    Found on http://www2.slac.stanford.edu/vvc/glossa