WordReference Random House Learner's Dictionary of American English © 2025
caf•feine /ˈkæfin/USA pronunciation   n. [uncountable]
  1. Nutritiona white, bitter chemical, obtained from coffee or tea, used in medicine as a stimulant.

WordReference Random House Unabridged Dictionary of American English © 2025
caf•feine  (ka fēn′, kaf′ēn, kaf′ē in),USA pronunciation n. [Chem., Pharm.]
  1. Nutritiona white, crystalline, bitter alkaloid, C8H10N4O2, usually derived from coffee or tea: used in medicine chiefly as a nervous system stimulant.
Also, caf•fein′. 
  • French caféine, equivalent. to café coffee + -ine -ine2
  • 1820–30;
caf•fein•ic  (ka fē′nik, kaf′ē in′ik),USA pronunciation adj. 
'caffeinic' also found in these entries (note: many are not synonyms or translations):
caffeine

Forum discussions with the word(s) "caffeinic" in the title:


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