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aster definition

as·ter (as′tər)

noun

  1. any of a large genus (Aster) of plants of the composite family, with purplish, blue, pink, or white daisylike flowers
  2. China aster
  3. a structure shaped like a star, formed during mitosis around the centrosome in the cytoplasm of a cell: not formed in seed plant cells

Etymology: ModL < L < Gr astēr, star

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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