RADIOACTIVITY meaning: Emission of particles from nuclei

We found 43 dictionaries that define the word radioactivity:

General (21 matching dictionaries)

radioactivity: Longman Dictionary of Contemporary English
radioactivity: Merriam-Webster
radioactivity: Oxford Learner's Dictionaries
radioactivity: American Heritage Dictionary of the English Language
radioactivity: Collins English Dictionary
radioactivity: Vocabulary.com
Radioactivity, radioactivity: Wordnik
radioactivity: Cambridge Advanced Learner's Dictionary
radioactivity: Wiktionary
radioactivity: The Wordsmyth English Dictionary-Thesaurus
radioactivity: Infoplease Dictionary
radioactivity: Dictionary.com
radioactivity: Cambridge Essential American English Dictionary
Radioactivity (album), Radioactivity (disambiguation), Radioactivity (song), Radioactivity: Wikipedia, the Free Encyclopedia
radioactivity: Rhymezone
radioactivity: AllWords.com Multi-Lingual Dictionary
radioactivity: FreeDictionary.org
radioactivity: Mnemonic Dictionary
radioactivity: TheFreeDictionary.com

Computing (1 matching dictionary)

radioactivity: Encyclopedia

Medicine (4 matching dictionaries)

radioactivity: Merriam-Webster Medical Dictionary
Dorland's Illustrated Medical Dictionary (No longer online)
online medical dictionary (No longer online)
radioactivity: Medical dictionary

Miscellaneous (2 matching dictionaries)

Encyclopedia of Graphic Symbols (No longer online)
Army Technology Glossary (No longer online)

Science (10 matching dictionaries)

Misunderstood Physics Terms (No longer online)
From Stargazers to Starships Glossary (No longer online)
Chemistry Dictionary (No longer online)
Radioactivity: Eric Weisstein's World of Physics
Radioactivity: Extragalactic Astronomy
radioactivity: Evolution Glossary
Radioactivity: Physic and Astronomy Glossary
Radioactivity: NRC Glossary of Nuclear Terms --
Accelerator Glossary (No longer online)
Illustrated Glossary of Geologic Terms (No longer online)

Slang (1 matching dictionary)

radioactivity: Urban Dictionary

Tech (4 matching dictionaries)

DOD Dictionary of Military Terms (No longer online)
Glossary of Meteorology (No longer online)
Nuclear Terms (No longer online)
Explosives (No longer online)

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Definitions from Wiktionary (

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▸ noun: Spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus.
▸ noun: The radiation so emitted; including gamma rays, alpha particles, neutrons, electrons, positrons, etc.

Types:

alpha, beta, gamma, x-ray, neutron, proton, more...

Phrases:

natural radioactivity, artificial radioactivity, Induced radioactivity, environmental radioactivity, residual radioactivity, more...

Adjectives:

specific, total, natural, artificial, high, bound, residual, induced, more, low, environmental

Colors:

neon green, bright yellow, lime green, electric blue, atomic tangerine, more...

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