GNU Collaborative International Dictionary of English

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1.       
   Aster , n. [L. aster aster, star, Gr. ἀστήρ star. See Star.]
   (Bot.) A genus of herbs with compound white or bluish flowers; starwort; Michaelmas daisy.
   1913 Webster
   (Floriculture) A plant of the genus Callistephus. Many varieties (called China asters, German asters, etc.) are cultivated for their handsome compound flowers.
   1913 Webster
   (Biol.) A star-shaped figure of achromatic substance found chiefly in cells dividing by mitosis.
   Webster 1913 Suppl.