Kata bahasa Indonesia
English word
WORDNET DICTIONARY
Noun caffein has 1 sense
- caffein(n = noun.substance) caffeine - a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects; is a kind of alkaloid
Derived form adjective caffeinic1
CIDE DICTIONARY
caffein, n. [Cf. F. caféine. See Coffee.].
A white, bitter, crystallizable substance, found in coffee and tea. It is identical with the alkaloid theine from tea leaves, and with guaranine from guarana. It is responsible for most of the stimulating effect of coffee or tea. [1913 Webster]