any composite plant of the genus Aster, having rays varying from white or pink to blue around a yellow disk.
a plant of some allied genus, as the China aster.
Cell Biology. a structure formed in a cell during mitosis, composed of astral rays radiating about the centrosome.
Furniture. sunflower (def. 2).
Other definitions for -aster (2 of 3)
a diminutive or pejorative suffix denoting something that imperfectly resembles or mimics the true thing: criticaster; poetaster, oleaster.
How to use aster in a sentence
The next moment, plump into Tilly's lap, fell a huge pink aster.The Sunbridge Girls at Six Star Ranch | Eleanor H. (Eleanor Hodgman) Porter
Be on the lookout for black beetle on aster and Chrysanthemum.Amateur Gardencraft | Eben E. Rexford
Iron-weed, which looks like an overgrown aster, has the same intense purple-blue color, and a royal profusion of flowers.A Year in the Fields | John Burroughs
The China aster has been for years a great favorite in both old-fashioned and modern gardens.The Practical Garden-Book | C. E. Hunn
This answer made aster so angry that he went over to the enemy and enlisted in their ranks.The Story of the Greeks | H. A. Guerber
British Dictionary definitions for aster (1 of 2)
any plant of the genus Aster, having white, blue, purple, or pink daisy-like flowers: family Asteraceae (composites): Compare golden aster
China aster a related Chinese plant, Callistephus chinensis, widely cultivated for its showy brightly coloured flowers
cytology a group of radiating microtubules that surrounds the centrosome before and during mitosis
British Dictionary definitions for -aster (2 of 2)
a person or thing that is inferior or bears only a poor resemblance to what is specified: poetaster
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012