[ ka-fee-niz-uh m, kaf-ee-niz-, kaf-ee-uh- ]
/ kæˈfi nɪz əm, ˈkæf iˌnɪz-, ˈkæf i ə- /


chronic toxicity caused by excessive intake of caffeine, characterized by anxiety, irritability, palpitations, insomnia, and digestive disturbances.

Nearby words

  1. cafetorium,
  2. caff,
  3. caffeinated,
  4. caffeine,
  5. caffeinic,
  6. caffey's disease,
  7. caffey's syndrome,
  8. caffè latte,
  9. caffè macchiato,
  10. cafone

Origin of caffeinism

First recorded in 1885–90; caffeine + -ism Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for caffeinism

Medicine definitions for caffeinism


[ kă-fēnĭz′əm, kăfē- ]


A toxic condition marked by diarrhea, elevated blood pressure, rapid breathing, heart palpitations, and insomnia, caused by excessive ingestion of coffee and other caffeine-containing substances.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.