Usually means: Neurotransmitter, regulates mood and behavior.
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We found 49 dictionaries that define the word serotonin:

General (22 matching dictionaries)
  1. serotonin: Longman Dictionary of Contemporary English
  2. serotonin: Merriam-Webster
  3. serotonin: Oxford Learner's Dictionaries
  4. serotonin: American Heritage Dictionary of the English Language
  5. serotonin: Collins English Dictionary
  6. serotonin: Vocabulary.com
  7. Serotonin, serotonin: Wordnik
  8. serotonin: Cambridge Advanced Learner's Dictionary
  9. serotonin: Wiktionary
  10. serotonin: Webster's New World College Dictionary, 4th Ed.
  11. serotonin: The Wordsmyth English Dictionary-Thesaurus
  12. serotonin: Infoplease Dictionary
  13. serotonin: Dictionary.com
  14. serotonin: Online Etymology Dictionary
  15. Serotonin (album), Serotonin (disambiguation), Serotonin (novel), Serotonin: Wikipedia, the Free Encyclopedia
  16. serotonin: Rhymezone
  17. serotonin: Stammtisch Beau Fleuve Acronyms
  18. serotonin: FreeDictionary.org
  19. serotonin: Mnemonic Dictionary
  20. serotonin: TheFreeDictionary.com

Computing (1 matching dictionary)
  1. serotonin: Encyclopedia

Medicine (24 matching dictionaries)
  1. serotonin: Merriam-Webster Medical Dictionary
  2. Dorland's Illustrated Medical Dictionary (No longer online)
  3. Serotonin: MedTerms.com Medical Dictionary
  4. Medical Dictionary (No longer online)
  5. serotonin: Natural Health glossary
  6. Serotonin: Merck Manuals
  7. online medical dictionary (No longer online)
  8. Probert Encyclopaedia of Medicine (No longer online)
  9. Hepatitis C Information Central (No longer online)
  10. Allergy Glossary (No longer online)
  11. DICTIONARY OF TERMS IN ORAL PHYSIOLOGY (No longer online)
  12. Multiple Sclerosis Encyclopaedia (No longer online)
  13. AIDS Medical Glossary and Drug Chart (No longer online)
  14. Neurotrauma Glossary (No longer online)
  15. serotonin: Dictionary of Cancer Terms
  16. Base Autisme (No longer online)
  17. SEROTONIN: Vocabulary of Loss: Suicide, Grief, and Ethics
  18. Glossary of HIV/AIDS Related Terms (No longer online)
  19. Sleep Terms (No longer online)
  20. serotonin: Medical dictionary
  21. Vitamin Glossary (No longer online)
  22. WeMove Glossary of Terms (No longer online)
  23. Serotonin: Drug Medical Dictionary
  24. Hyperdictionary (No longer online)

Science (1 matching dictionary)
  1. Agricultural Thesaurus and Glossary (No longer online)

Slang (1 matching dictionary)
  1. Serotonin: Urban Dictionary

(Note: See serotonins as well.)

Definitions from Wiktionary (
)
American English Definition British English Definition
noun:  (biochemistry) An indoleamine neurotransmitter, 5-hydroxytryptamine, that is involved in depression, appetite, etc., and is crucial in maintaining a sense of well-being, security, etc.

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    sunshine yellow,     sky blue,     lavender,     soft pink,     mint green, more...



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