Definition of theophylline in English:

theophylline

noun θɪəˈfɪlɪnθɪəˈfɪliːnθiˈɑfələn

mass nounChemistry

A bitter crystalline compound present in small quantities in tea leaves, isomeric with theobromine.
〔化〕茶碱
Example sentencesExamples
- A number of studies have been conducted with the related compound known as theophylline.
- While caffeine primarily is active in the brain and muscles, theophylline is active in stimulating the respiratory system, heart and kidneys.
- 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.
- Three very similar compounds - all in this same group of alkaloids - are present in common beverages, namely caffeine, theophylline, and theobromine.

Origin

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

Definition of theophylline in US English:

theophylline

nounTHēˈäfələnθiˈɑfələn

Chemistry

A bitter crystalline compound present in small quantities in tea leaves, isomeric with theobromine.
〔化〕茶碱
Example sentencesExamples
- A number of studies have been conducted with the related compound known as theophylline.
- It contains not only caffeine but also theophylline, a compound that can ease the symptoms of a cold.
- Two related xanthines, theobromine and theophylline, are often present in smaller amounts.
- Three very similar compounds - all in this same group of alkaloids - are present in common beverages, namely caffeine, theophylline, and theobromine.
- While caffeine primarily is active in the brain and muscles, theophylline is active in stimulating the respiratory system, heart and kidneys.

Origin

Late 19th century: from modern Latin Thea (former genus name of the tea plant, from Dutch thee) + Greek phullon ‘leaf’ + -ine.

单词	theophylline
释义	Definition of theophylline in English: theophylline noun θɪəˈfɪlɪnθɪəˈfɪliːnθiˈɑfələn mass nounChemistry A bitter crystalline compound present in small quantities in tea leaves, isomeric with theobromine. 〔化〕茶碱 Example sentencesExamples A number of studies have been conducted with the related compound known as theophylline. While caffeine primarily is active in the brain and muscles, theophylline is active in stimulating the respiratory system, heart and kidneys. 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. Three very similar compounds - all in this same group of alkaloids - are present in common beverages, namely caffeine, theophylline, and theobromine. Origin Late 19th century: from modern Latin Thea (former genus name of the tea plant, from Dutch thee) + Greek phullon 'leaf' + -ine⁴. Definition of theophylline in US English: theophylline nounTHēˈäfələnθiˈɑfələn Chemistry A bitter crystalline compound present in small quantities in tea leaves, isomeric with theobromine. 〔化〕茶碱 Example sentencesExamples A number of studies have been conducted with the related compound known as theophylline. It contains not only caffeine but also theophylline, a compound that can ease the symptoms of a cold. Two related xanthines, theobromine and theophylline, are often present in smaller amounts. Three very similar compounds - all in this same group of alkaloids - are present in common beverages, namely caffeine, theophylline, and theobromine. While caffeine primarily is active in the brain and muscles, theophylline is active in stimulating the respiratory system, heart and kidneys. Origin Late 19th century: from modern Latin Thea (former genus name of the tea plant, from Dutch thee) + Greek phullon ‘leaf’ + -ine.
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