theine

/ˈθiːiːn/
noun
  1. A variant spelling of 'thein'; a bitter alkaloid in tea that is chemically the same as caffeine.
    • Many tea drinkers enjoy the gentle lift that theine provides without the jitters of coffee.
    • Theine was once thought to be different from caffeine, but scientists now know they are the same substance.
    • Decaffeinated tea still contains a small amount of theine.
Synonyms
What does "theine" mean? | whatsthatwordmean | whatsthatwordmean