/ Dictionary / Index M microsporangium: Meaning and Definition of Find definitions for: mi•cro•spo•ran•gi•um Pronunciation: (mī"krō-spô-ran'jē-um, -spō-), [key] — pl. -gi•a a sporangium containing microspores. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: microsporangium (Thesaurus) microspectrophotometer microspore Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language