/ Dictionary / Index P propagule: Meaning and Definition of Find definitions for: prop•a•gule Pronunciation: (prop'u-gyl"), [key] — n. any structure capable of being propagated or acting as an agent of reproduction. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. propagation propane Related Content Daily Word Quiz: hale Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language