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suffix forming nouns
a person or thing that is inferior or bears only a poor resemblance to what is specified: poetaster.
[from Latin: suffix indicating imperfect resemblance]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈæs tər)

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.
[1595–1605; < Latin < Greek astḗr star]


a suffix used to form nouns denoting something that imperfectly resembles or mimics the true thing: criticaster; poetaster.
[< Latin]


a combining form with the meaning “star”: cotoneaster.
[< Greek astḗr star; compare astro-]
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