/ Dictionary / Index A aminophylline: Meaning and Definition of Find definitions for: a•mi•no•phyl•line Pronunciation: (u-mē"nō-fil'īn, -ēn, am"u-nō-), [key] — n. Pharm. a theophylline derivative, CHNO, used chiefly to relieve bronchial spasm in asthma, in the treatment of certain heart conditions, and as a diuretic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: aminophylline (Thesaurus) aminophenol aminoplast Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language