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Definition of Angiosperms
1. angiosperm [n] - See also: angiosperm
Medical Definition of Angiosperms
1. Any member of the more than 250,000 species of flowering plants (division magnoliophyta) having roots, stems, leaves, and well-developed conductive tissues (xylem and phloem). Angiosperms are often differentiated from gymnosperms by their production of seeds within a closed chamber (the ovary). The magnoliophyta division is composed of two classes, the monocotyledons (liliopsida) and dicotyledons (magnoliopsida). (12 Dec 1998)