We found 36 dictionaries that define the word alpha particle:

General (21 matching dictionaries)

1. alpha particle: Merriam-Webster
2. alpha particle: Oxford Learner's Dictionaries
3. alpha particle: American Heritage Dictionary of the English Language
4. alpha particle: Collins English Dictionary
5. alpha particle: Vocabulary.com
6. alpha particle: Wordnik
7. alpha particle: Cambridge Advanced Learner's Dictionary
8. alpha particle: Wiktionary
9. alpha particle: The Wordsmyth English Dictionary-Thesaurus
10. alpha particle: Infoplease Dictionary
11. alpha particle: Dictionary.com
12. Alpha-particle, Alpha particle: Wikipedia, the Free Encyclopedia
13. alpha particle: Rhymezone
14. alpha particle: Stammtisch Beau Fleuve Acronyms
15. alpha particle: FreeDictionary.org
16. alpha particle: Mnemonic Dictionary
17. alpha particle: TheFreeDictionary.com
18. alpha particle: Longman Dictionary of Contemporary English
19. alpha particle: Merriam-Webster

Business (1 matching dictionary)

20. alpha particle: Legal dictionary

Computing (2 matching dictionaries)

21. alpha particle: Free On-line Dictionary of Computing
22. alpha particle: Encyclopedia

Medicine (5 matching dictionaries)

23. alpha particle: Merriam-Webster Medical Dictionary
24. Alpha particle, Particle, alpha: MedTerms.com Medical Dictionary
25. online medical dictionary (No longer online)
26. alpha particle: Medical dictionary
27. Alpha particle, Particle, alpha: Drug Medical Dictionary

Science (4 matching dictionaries)

28. Chemistry Dictionary (No longer online)
29. Alpha Particle: Eric Weisstein's World of Physics
30. Illustrated Glossary of Geologic Terms (No longer online)
31. Alpha particle: NRC Glossary of Nuclear Terms --

Tech (3 matching dictionaries)

32. Glossary of Meteorology (No longer online)
33. Explosives (No longer online)
34. Nuclear Terms (No longer online)

(Note: See alpha_particles as well.)

Definitions from Wiktionary (alpha particle) ▸ noun:  (physics) A doubly positively charged nucleus of a helium-4 atom (consisting of two protons and two neutrons), emitted as a consequence of radioactivity; α-particle Similar: α-particle, alpha emission, alpha radiation, alpha emitter, alpha decay, alpha ray, angel particle, antihelion, antinucleon, protonium, more... Opposite: betparticle, gammparticle, neutron Types: alpha-beta, alpha-beta-gamma, alpha-beta-delta, alpha-beta-epsilon, more... Adjectives: beta, p, weak, exotic, orbital, electronuclear, antioxygen, high-energy, metastable, antired, unbound ▸ Words similar to alpha particle ▸ Usage examples for alpha particle ▸ Idioms related to alpha particle ▸ Wikipedia articles (New!) ▸ Words that often appear near alpha particle ▸ Rhymes of alpha particle ▸ Invented words related to alpha particle