/ Dictionary / Index A angiosperm: Meaning and Definition of Find definitions for: an•gi•o•sperm Pronunciation: (an'jē-u-spûrm"), [key] — n. Bot. a plant having its seeds enclosed in an ovary; a flowering plant. Cf. gymnosperm. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: angiosperm (Thesaurus) angiosarcoma angiospermous Related Content Daily Word Quiz: belligerent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language