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We found 57 dictionaries with English definitions that include the word half-life:
Click on the first link on a line below to go directly to a page where "half-life" is defined.

General dictionaries General (22 matching dictionaries)
  1. half-life: Merriam-Webster.com [home, info]
  2. half-life: Oxford Dictionaries [home, info]
  3. half-life: American Heritage Dictionary of the English Language [home, info]
  4. half-life, half-life: Collins English Dictionary [home, info]
  5. half-life: Vocabulary.com [home, info]
  6. half-life: Macmillan Dictionary [home, info]
  7. Half-Life, Half-life, half-life: Wordnik [home, info]
  8. half-life: Cambridge Advanced Learner's Dictionary [home, info]
  9. half-life: Wiktionary [home, info]
  10. half-life: Webster's New World College Dictionary, 4th Ed. [home, info]
  11. half-life: The Wordsmyth English Dictionary-Thesaurus [home, info]
  12. half-life: Infoplease Dictionary [home, info]
  13. half-life: Dictionary.com [home, info]
  14. half-life: Online Etymology Dictionary [home, info]
  15. Half-Life, Half-life: Wikipedia, the Free Encyclopedia [home, info]
  16. half-life: Rhymezone [home, info]
  17. half-life: Free Dictionary [home, info]
  18. half-life: Mnemonic Dictionary [home, info]
  19. half-life: LookWAYup Translating Dictionary/Thesaurus [home, info]
  20. half-life: Dictionary/thesaurus [home, info]

Business dictionaries Business (8 matching dictionaries)
  1. Half-Life: MoneyGlossary.com [home, info]
  2. half-life: Webster's New World Finance & Investment Dictionary [home, info]
  3. half-life: INVESTORWORDS [home, info]
  4. Half-life: bizterms.net [home, info]
  5. Half-life: Bloomberg Financial Glossary [home, info]
  6. Half-Life: Investopedia [home, info]
  7. Half-life: Energy Dictionary [home, info]
  8. half-life: Financial dictionary [home, info]

Computing dictionaries Computing (2 matching dictionaries)
  1. Half-Life: Game Dictionary [home, info]
  2. half-life: Encyclopedia [home, info]

Medicine dictionaries Medicine (10 matching dictionaries)
  1. Half-Life: AIDSinfo Glossary [home, info]
  2. Half-Life: Medical Dictionary [home, info]
  3. half-life: online medical dictionary [home, info]
  4. Half-Life: HIV/AIDS Glossary [home, info]
  5. Half-Life: Hepatitis C Information Central [home, info]
  6. half-life: Prostate Cancer Interactive Glossary [home, info]
  7. Half-Life: AIDS Medical Glossary and Drug Chart [home, info]
  8. half-life: Glossary of HIV/AIDS Related Terms [home, info]
  9. half-life: Medical dictionary [home, info]
  10. Half-life: All About Hepatitis C [home, info]

Science dictionaries Science (12 matching dictionaries)
  1. Half-Life: Chemistry Dictionary [home, info]
  2. half-life: Archaeology Wordsmith [home, info]
  3. Half-life: Drug Discovery and Development [home, info]
  4. Half-Life: Eric Weisstein's World of Physics [home, info]
  5. Half-Life: Extragalactic Astronomy [home, info]
  6. half-life: Dictionary of Geology [home, info]
  7. half-life: Evolution Glossary [home, info]
  8. Half-life: NRC Glossary of Nuclear Terms -- [home, info]
  9. half-life: Anthropology dictionary [home, info]
  10. Half-life: Accelerator Glossary [home, info]
  11. HALF-LIFE: Zoom Astronomy Glossary [home, info]

Tech dictionaries Tech (3 matching dictionaries)
  1. Half-life: AUTOMOTIVE TERMS [home, info]
  2. half-life: Glossary of Meteorology [home, info]
  3. Half-life: Nuclear Terms [home, info]

(Note: See half-lives for more definitions.)

Quick definitions from Macmillan (
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Quick definitions from WordNet (half-life)

noun:  the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate)

▸ Also see half-lives
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Phrases that include half-life:   antibody half-life, biologic half-life, half-life platinum collection, half-life 2 lost coast, half-life of desire, more...

Words similar to half-life:   half-lives, more...

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