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theophylline
[ thee-uh-fil-een, -in ]
/ ˌθi əˈfɪl in, -ɪn /
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noun Pharmacology.
a white, crystalline, poisonous alkaloid, C7H8N4O2, an isomer of theobromine, extracted from tea leaves or produced synthetically: used to relieve bronchial spasms, in the treatment of certain heart conditions, and as a diuretic.
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Words nearby theophylline
theophagy, theophany, Theophilus, theophobia, Theophrastus, theophylline, theophylline ethylenediamine, theor., theorbo, order of the day, the, Theorell
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
How to use theophylline in a sentence
Caffeine, theophylline, and theobromine are not found in animal tissues, but are fairly widely distributed in plants.
The Chemistry of Plant Life|Roscoe Wilfred Thatcher
British Dictionary definitions for theophylline
theophylline
/ (ˌθɪəˈfɪliːn, -ɪn, θɪˈɒfɪlɪn) /
noun
a white crystalline slightly water-soluble alkaloid that is an isomer of theobromine: it occurs in plants, such as tea, and is used to treat asthma. Formula: C 7 H 8 N 4 O 2See also xanthine (def. 2)
Word Origin for theophylline
C19: from theo (bromine) + phyllo- + -ine ²
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medical definitions for theophylline
theophylline
[ thē-ŏf′ə-lĭn, thē′ō-fĭl′ēn′ ]
n.
A colorless crystalline alkaloid derived from tea leaves or made synthetically, used as a cardiac stimulant and diuretic.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for theophylline
theophylline
[ thē-ŏf′ə-lĭn ]
A colorless, crystalline alkaloid derived from tea leaves or made synthetically. It is used in medicine especially as a bronchial dilator. Theophylline is a xanthine that is similar in structure to caffeine and is a structural isomer of theobromine. Chemical formula: C7H8N4O2.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.