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We found 41 dictionaries with English definitions that include the word positron:
Click on the first link on a line below to go directly to a page where "positron" is defined.

General (26 matching dictionaries)

1. positron: Merriam-Webster.com [home, info]
2. positron: Oxford Dictionaries [home, info]
3. positron: American Heritage Dictionary of the English Language [home, info]
4. positron: Collins English Dictionary [home, info]
5. positron: Vocabulary.com [home, info]
6. positron: Macmillan Dictionary [home, info]
7. Positron, positron: Wordnik [home, info]
8. positron: Cambridge Advanced Learner's Dictionary [home, info]
9. positron: Wiktionary [home, info]
10. positron: Webster's New World College Dictionary, 4th Ed. [home, info]
11. positron: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. positron: Infoplease Dictionary [home, info]
13. positron: Dictionary.com [home, info]
14. positron: Online Etymology Dictionary [home, info]
15. positron: UltraLingua English Dictionary [home, info]
16. Positron (video game), Positron: Wikipedia, the Free Encyclopedia [home, info]
17. positron: Rhymezone [home, info]
18. positron: Hutchinson's Dictionary of Difficult Words [home, info]
19. positron: Free Dictionary [home, info]
20. positron: Hutchinson Dictionaries [home, info]
21. positron: Mnemonic Dictionary [home, info]
22. positron: WordNet 1.7 Vocabulary Helper [home, info]
23. positron: LookWAYup Translating Dictionary/Thesaurus [home, info]
24. positron: Dictionary/thesaurus [home, info]

Computing (1 matching dictionary)

25. positron: Encyclopedia [home, info]

Medicine (2 matching dictionaries)

26. positron: online medical dictionary [home, info]
27. positron: Medical dictionary [home, info]

Miscellaneous (1 matching dictionary)

28. positron: Encyclopedia of Graphic Symbols [home, info]

Science (7 matching dictionaries)

29. Positron: Chemistry Dictionary [home, info]
30. Positron: Eric Weisstein's World of Physics [home, info]
31. positron: Imagine the Universe! Dictionary [home, info]
32. Positron: Extragalactic Astronomy [home, info]
33. Positron: NRC Glossary of Nuclear Terms -- [home, info]
34. Positron: Accelerator Glossary [home, info]
35. POSITRON: Zoom Astronomy Glossary [home, info]

Slang (1 matching dictionary)

36. positron: Urban Dictionary [home, info]

Sports (1 matching dictionary)

37. Positron: Bicycle Glossary [home, info]

Tech (2 matching dictionaries)

38. positron: High-Energy Astrophysics [home, info]
39. positron: Glossary of Meteorology [home, info]

(Note: See positrons for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (positron) ▸ noun:  an elementary particle with positive charge; interaction of a positron and an electron results in annihilation ▸ Also see positrons ▸ Word origin ▸ Words similar to positron ▸ Usage examples for positron ▸ Popular adjectives describing positron ▸ Words that often appear near positron ▸ Rhymes of positron ▸ Invented words related to positron