Definition of theophylline in English:

theophylline

Line breaks: theo|phyl¦line
Pronunciation: /θɪəˈfɪliːn
 
, -lɪn/

noun

[mass noun] Chemistry
  • A bitter crystalline compound present in small quantities in tea leaves, isomeric with theobromine.
    More example sentences
    • Three very similar compounds - all in this same group of alkaloids - are present in common beverages, namely caffeine, theophylline, and theobromine.
    • Two related xanthines, theobromine and theophylline, are often present in smaller amounts.
    • It contains not only caffeine but also theophylline, a compound that can ease the symptoms of a cold.

Origin

late 19th century: from modern Latin Thea (former genus name of the tea plant, from Dutch thee) + Greek phullon 'leaf' + -ine4.

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noun
grotesque quality or grotesque things collectively