/ Dictionary / Index T theophylline ethylenediamine: Meaning and Definition of Find definitions for: theophyl'line eth'yl•ene•di'a•mine Pronunciation: (eth'u-lēn-dī'u-mēn", -dī-am'in), [key] — Pharm. Pharm. aminophylline. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. theophylline theor. Related Content Daily Word Quiz: morose Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language