angiosperm(n = noun.plant) flowering plant - plants having seeds in a closed ovary;
is a kind of phanerogam, seed plant, spermatophyte
has parts: bloom, blossom, flower
is a member of angiospermae, anthophyta, class angiospermae, division anthophyta, division magnoliophyta, magnoliophyta
has particulars: angiocarp, dicot, dicotyledon, exogen, magnoliopsid, endogen, liliopsid, monocot, monocotyledon, flower, wild flower, wildflower, madderwort, rubiaceous plant
Derived form adjective angiospermous₁

   A plant which has its seeds inclosed in a pericarp. Contrasted with gymnosperm. [1913 Webster]
" The term is restricted to exogenous plants, and applied to one of the two grand divisions of these species, the other division including gymnosperms, or those which have naked seeds. The oak, apple, beech, etc., are angiosperms, while the pines, spruce, hemlock, and the allied varieties, are gymnosperms." [1913 Webster]

angiosperm, n. any plant producing flowers and reproducing by seeds enclosed within a carpel, including herbaceous plants, herbs, shrubs, grasses and most trees (opp. GYMNOSPERM).

Derivative:
angiospermous adj.

Etymology:
Gk aggeion vessel + sperma seed