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Meaning of aster

as•ter

Pronunciation: (as'tur), [key]
— n.
  1. any composite plant of the genus Aster, having rays varying from white or pink to blue around a yellow disk.
  2. a plant of some allied genus, as the China aster.
  3. a structure formed in a cell during mitosis, composed of astral rays radiating about the centrosome.
  4. sunflower (def. 2).

-aster

Pronunciation: [key]
  1. a diminutive or pejorative suffix denoting something that imperfectly resembles or mimics the true thing: criticaster; poetaster, oleaster.

-aster

Pronunciation: [key]
  1. a combining form with the meaning “star,” used in the formation of compound words: diaster.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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