theophylline

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the·oph·yl·line

 (thē-ŏf′ə-lĭn)
n.
A colorless crystalline alkaloid, C7H8N4O2, derived from tea leaves or made synthetically, used as a bronchodilator primarily to treat asthma and chronic obstructive pulmonary disease.

[New Latin thea, the tea plant (ultimately from Dutch thee); see tea + phyll(o)- + -ine.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

theophylline

(ˌθɪəˈfɪliːn; -ɪn; θɪˈɒfɪlɪn)
n
(Pharmacology) 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: C7H8N4O2. See also xanthine2
[C19: from theo(bromine) + phyllo- + -ine2]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

the•o•phyl•line

(ˌθi əˈfɪl in, -ɪn)

n.
a crystalline alkaloid, C7H8N4O2, an isomer of theobromine extracted from tea leaves or produced synthetically, used in medicine chiefly to relieve bronchial spasms.
[1890–95; theo-, comb. form representing New Latin thea tea + -phyll + -ine2]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.theophylline - a colorless crystalline alkaloid derived from tea leaves or made synthetically; used in medicine as a bronchial dilator
bronchodilator - a drug that relaxes and dilates the bronchial passageways and improves the passages of air into the lungs
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

theophylline

n teofilina
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in periodicals archive ?
Rosas Castilla, "[sup.1]H NMR study of the complexation of aromatic drugs with dimethylxanthine derivatives," Journal of Molecular Structure, vol.
Theophylline, also known as dimethylxanthine, was used as positive control because of its use as smooth muscle relaxant.
In addition, certain medications may have side effects that make it difficult to sleep, including antidepressants such as fluoxetine (Prozac), corticosteroids such as prednisone (Deltasone), and bronchodilators such as dimethylxanthine (Theophylline).