Illustration of aster
- aster 1a
1
a
: any of various chiefly fall-blooming leafy-stemmed composite herbs (Aster and closely related genera) with often showy heads containing disk flowers or both disk and ray flowers
b
2
: a system of microtubules arranged radially about a centriole at either end of the mitotic or meiotic spindle
: one that is inferior or not genuine
criticaster
Examples of aster in a Sentence
Recent Examples on the Web
Susan Degrane, Chicago Tribune, 29 Oct. 2024
At Yew Dell Botanical Gardens, our two favorite native fall-blooming asters are the fragrant aster (S. oblongifolium) and the smooth aster (S. leave).
—Paul Cappiello, The Courier-Journal, 4 Oct. 2024
Wildflower season is generally mid-March through April and into May and can include Mojave aster and desert trumpet.
—Jaclyn Cosgrove, Los Angeles Times, 17 Oct. 2024
While there are asters that bloom at all different times of the growing season, the fall asters are the superstars of the aster world.
—Paul Cappiello, The Courier-Journal, 4 Oct. 2024
See all Example Sentences for aster 
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Noun
Besides nurturing native grasses and sedges, Kozlowski coaxes along several varieties of wild asters, woodland sunflowers, and herbs like wild licorice and mountain mint.
—Susan Degrane, Chicago Tribune, 29 Oct. 2024
At Yew Dell Botanical Gardens, our two favorite native fall-blooming asters are the fragrant aster (S. oblongifolium) and the smooth aster (S. leave).
—Paul Cappiello, The Courier-Journal, 4 Oct. 2024
Wildflower season is generally mid-March through April and into May and can include Mojave aster and desert trumpet.
—Jaclyn Cosgrove, Los Angeles Times, 17 Oct. 2024
While there are asters that bloom at all different times of the growing season, the fall asters are the superstars of the aster world.
—Paul Cappiello, The Courier-Journal, 4 Oct. 2024
See all Example Sentences for aster
Dictionary Entries Near aster
Cite this Entry
“Aster.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aster. Accessed 28 Nov. 2024.
Copy CitationKids Definition
aster
noun
as·ter
ˈas-tər 
: any of various mostly fall-blooming leafy-stemmed herbs related to the daisies usually with showy white, pink, purple, or yellow flower heads
Medical Definition
aster
noun
as·ter
ˈas-tər
: a system of microtubules arranged in rays around a centriole at either end of the mitotic or meiotic spindle
The first stage in the formation of the mitotic spindle in a typical animal cell is the appearance of microtubules in a "sunburst" arrangement, or aster, around each centrosome during early prophase.—Gerald Karp, Cell and Molecular Biology: Concepts and Experiments, 6th edition
Gerald Karp, Cell and Molecular Biology: Concepts and Experiments, 6th editioncalled also cytaster
Love words? Need even more definitions?
Merriam-Webster unabridged
Share