aster

noun
as·​ter | \ ˈa-stər How to pronounce aster (audio) \

Definition of aster

 (Entry 1 of 2)

1 [New Latin, from Latin, aster, from Greek aster-, astēr star, aster — more at star]
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
2 [New Latin, from Greek aster-, astēr] : a system of microtubules arranged radially about a centriole at either end of the mitotic or meiotic spindle

Definition of -aster (Entry 2 of 2)

: one that is inferior or not genuine criticaster

Illustration of aster

Illustration of aster

Noun

aster 1a

In the meaning defined above

Examples of aster in a Sentence

Recent Examples on the Web: Noun Deer will eat fall aster, so the planting site must be selected to avoid their browsing. Calvin Finch, ExpressNews.com, "What’s blooming now in our chilly San Antonio gardens," 14 Nov. 2019 Mönch’ aster, catmint, lavender, rudbeckia, and Salvia chamaedryoides. Thad Orr, Sunset, "Your Essential Gardening To-Do List for April," 22 Jan. 2018 The upper reaches, near the entrance, have seen tree loss in recent years and the brighter light has made New England and calico asters and various goldenrods happy but such shade lovers as sedges not so content. Washington Post, "How the National Arboretum got its ferns and became a civic treasure," 29 Oct. 2019 The last bees and butterflies of the season hover over goldenrod and asters. Anne Barnard, New York Times, "How a Rooftop Meadow of Bees and Butterflies Shows N.Y.C.’s Future," 26 Oct. 2019 The ground around the tower is blanketed with heather, anemones, purple asters, and huckleberry bushes. BostonGlobe.com, "High in the Cascades, fire lookouts are still on the lookout for danger - The Boston Globe," 29 Sep. 2019 The black-stemmed white wood aster was putting out the last of its little daisies. Washington Post, "How the National Arboretum got its ferns and became a civic treasure," 29 Oct. 2019 The ground around the tower is blanketed with heather, anemones, purple asters and huckleberry bushes. New York Times, "High in the Cascades, a Lone Fire Lookout Still Keeps Watch," 28 Sep. 2019 Other, lower-living species—showy gentians, a spiky aster relative called Chuquiraga, purple lupines—had moved upslope by an average of more than 500 meters since 1802. Tim Appenzeller, Science | AAAS, "Global warming has made iconic Andean peak unrecognizable," 11 Sep. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'aster.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of aster

Noun

1664, in the meaning defined at sense 1a

History and Etymology for aster

Noun suffix

Middle English, from Latin, suffix denoting partial resemblance

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Time Traveler for aster

Time Traveler

The first known use of aster was in 1664

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Statistics for aster

Last Updated

23 Feb 2020

Cite this Entry

“Aster.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aster. Accessed 28 Feb. 2020.

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More Definitions for aster

aster

noun
How to pronounce -aster (audio)

English Language Learners Definition of aster

: a type of plant that is grown in gardens for its colorful flowers

aster

noun
as·​ter | \ ˈa-stər How to pronounce aster (audio) \

Kids Definition of aster

: any of various herbs related to the daisies that have leafy stems and white, pink, purple, or yellow flower heads which bloom in the fall

aster

noun
as·​ter | \ ˈas-tər How to pronounce aster (audio) \

Medical Definition of aster

: 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, 2010

called also cytaster

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More from Merriam-Webster on aster

Rhyming Dictionary: Words that rhyme with aster

Spanish Central: Translation of aster

Nglish: Translation of aster for Spanish Speakers

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