aster

Definitions

  • WordNet 3.6
    • n aster star-shaped structure formed in the cytoplasm of a cell having fibers like rays that surround the centrosome during mitosis
    • n aster any of various chiefly fall-blooming herbs of the genus Aster with showy daisylike flowers
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Webster's Revised Unabridged Dictionary
    • Aster (Bot) A genus of herbs with compound white or bluish flowers; starwort; Michaelmas daisy.
    • Aster (Floriculture) A plant of the genus Callistephus. Many varieties (called China asters German asters, etc.) are cultivated for their handsome compound flowers.
    • Aster (Biol) A star-shaped figure of achromatic substance found chiefly in cells dividing by mitosis.
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Century Dictionary and Cyclopedia
    • n aster A star.
    • n aster A plant of the genus Aster.
    • n aster [capitalized] [NL.] A large genus of plants, natural order Compositæ, natives of Europe, Asia, and America, but chiefly of North America, about 120 species occurring in the United States. They are mostly perennial, flowering in late summer and autumn, on which account they are often called in England Michaelmas or Christmas daisies. The ray-flowers vary from white to lilac-blue or purple, the center being yellow, changing sometimes to purple. Many of the species resemble one another closely, and in no genus is the satisfactory determination of the species more difficult.
    • n aster A name of plants of some allied genera, as the Cape aster (Agathæa amelloides), the China aster (Callistephus Chinensis), the false aster (Boltonia), the golden aster (Chrysopsis), and the white-topped aster (Sericocarpus).—5. In biology, a karyokinetic figure intervening in time between the rosette and the diaster during the changes in the nucleus of a cell. See diaster and karyokinesis.
    • n aster In ornithology, same as Astur.
    • n aster A suffix of Latin origin, forming contemptuous diminutives, as in criticaster, poetaster. It occurs without recognized diminutive force in pinaster, oleaster (which see).
    • n aster In sponges, a multiactinate microsclere: same as euaster.
    • n aster In cytology, the star-shaped structure at either pole of the karyokinetic figure during cell-division: same as karyaster (which see).
    • n aster Two small arches of precious metal, transversely riveted (said to have been invented by St. John Chrysostom), placed over the sacred wafer in the paten in preparation for the eucharistic sacrifice, to prevent the veil from touching it: now out of use.
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Chambers's Twentieth Century Dictionary
    • n Aster as′tėr a genus of plants of the natural order Compositæ, with showy radiated flowers varying from white to lilac-blue or purple, mostly perennial, flowering in late summer and autumn, hence often called in England Michaelmas or Christmas daisies
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Etymology

Webster's Revised Unabridged Dictionary
L. aster, aster, star, Gr. 'asth`r star. See Star
Chambers's Twentieth Century Dictionary
Gr. astēr, a star.

Usage

In literature:

Various wood asters were beginning to bloom, golden-rod, balsams, and several fine, white blossoms.
"Helen Grant's Schooldays" by Amanda M. Douglas
Mammy found them there a week after, when she was setting out the asters.
"Hildegarde's Harvest" by Laura E. Richards
I just dread asters, I do; not but what golden-rods is almost worse.
"Anne" by Constance Fenimore Woolson
China-asters were blossoming gaily among the weeds about these grave-houses.
"Mothering on Perilous" by Lucy S. Furman
There were not many flowers, only wild asters on the hillside, and meadow saffron in the valleys, and under the beeches ferns and ivy.
"The Shoemaker's Apron" by Parker Fillmore
But I hoped you'd guess asters.
"Library of the World's Best Literature, Ancient and Modern, Vol. 15" by Various
The principal nectar-secreting plants are the clovers, sumac, buckwheat, cranberry and blueberry blossoms, goldenrod, asters and mallows.
"A Living from the Land" by William B. Duryee
There were the roses by the porch and the goldenrod and aster, bits of bright weed, growing in the sand.
"The Shadow" by Mary White Ovington
In the courtyard there is a border of hollyhocks and snapdragon and asters.
"The Unveiling of Lhasa" by Edmund Candler
She had just gone to the garden, to cut some dahlias and china-asters for the supper-table.
"L'Arrabiata and Other Tales" by Paul Heyse
She had come from the garden, and had a bunch of white asters at her bosom, and her eyes shone with delight.
"A Sister's Love" by W. Heimburg
September is adorned with golden rod and purple asters.
"Suppers" by Paul Pierce
At due door of the vestry he dropped his aster's arm and avoided speaking to her again.
"The Undying Past" by Hermann Sudermann
Asters are white, sometimes.
"The Idyl of Twin Fires" by Walter Prichard Eaton
Crown asters have a white centre, and dark crimson or purple circumference, and are very beautiful.
"Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7" by Various
And my lonely spirit thrills To see the frosty asters like smoke upon the hills.
"Golden Numbers" by Various
John Asterly, the hero of A FLOWER OF MONTEREY, came to the Californias from Boston.
"The Triumph of Virginia Dale" by John Francis, Jr.
China Asters of several varieties.
"The Practical Garden-Book" by C. E. Hunn
Their deep-red leaves cover the graves, and between the hillocks are flowering asters.
"The Jews of Barnow" by Karl Emil Franzos
Goldenrod, chrysanthemums, and asters in their times.
"The Century Cook Book" by Mary Ronald
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In poetry:

Now the fields are brown and barren,
Bitter autumn blows,
And of all the stupid asters
Not one knows.
"Wild Asters" by Sara Teasdale
The purple on the twists of wilding vine,
The last of asters you shall not forget,
And what of living verdure lingers yet,
Around the autumn vision lightly twine.
"Come to the park they say is dead, and view" by Stefan Anton George
I wish, and I wish that the spring would go faster,
Nor long summer bide so late;
And I could grow on like the foxglove and aster,
For some things are ill to wait.
"Songs Of Seven (complete)" by Jean Ingelow
Ah! come, ere August flames its heart away,
Ere, like a golden widow, autumn goes
Across the woodlands, sad with thoughts of May,
An aster in her bosom for a rose.
"Invitation" by Richard Le Gallienne
But the desire, still more to gladden, glows
Within; unchilled her inmost ardour yet,
And gaudy sashes round her waist she throws
And asters in her tresses she has set;
"October Sonnet" by Josef Svatopluk Machar
All evening the marsh is a slick pool
Where dream wild hares, witch hazel, pretty girls.
"Up from the important picnic of a fool
Those rotted asters!" Eddy on eddy swirls
"Idiot" by Allen Tate

In news:

An overview of the experimental treatments to investigate the effects of ConTego Pro sprays on drought stress tolerance of chrysanthemum and aster.
Inside the Aster's Studio: Susan Cohan .
A native heart leaf aster (on a background of red chrysanthemums) in the Amherst garden of Cheryl Wilson on Wednesday, September 26, 2012.KEVIN GUTTING Purchase photo reprints at PhotoExtra.
Asters are among the best autumn performers.
A) A year's subscription to Horticulture and a Kiss My Aster prize pack.
PLANO — Wearing a braided headband in the yellow, green and red of Ethiopia's flag, Aster Teferra spooned slow-cooked lentils, chicken and spinach onto sponge bread Sunday at Ethiopian Day, an annual festival at Plano Centre.
Particular native flowers bloom this time of year to provide nectar such as asters, goldenrod and some lobelias.
Perennial asters outshine mums as autumn's stars.
Wood's Blue hybrid aster, top, behind a bunch of yellow zinnias (below) in the Amherst garden of Cheryl Wilson on Wednesday, September 26, 2012.KEVIN GUTTING Purchase photo reprints at PhotoExtra.
The pollen and nectar from late blooming flowers like asters help these vital insect pollinators to overwinter.
SUGAR GROVE—The youth group from Sugar Grove United Methodist Church,176 Main St, Sugar Grove, will sell 8-inch potted mums and asters for $8 on Sundays, Sept 23 and Sept 30, 9:15 to 10:15 am, and 11:30 am to noon.
Fall-flowering New York Aster (Symphyotrichum novi-belgii Photo courtesy Seig Kopinitz / November 5, 2012 ).
Plants with Aster Yellows doomed.
Coneflowers look more like Frankenflowers when affected by Aster Yellows Phytoplasma, a virus-like organism spread by one kind of insect.
Popular brands include UGGS, See Kai Run, Naturino from Italy, Aster, and MOD8 from France.
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In science:

In such active filament systems, complex behaviors such as contractions and the formation of asters and spirals have been observed [52, 53, 54, 55, 56]. A phenomenological description of the dynamics of active filament bundles can be used to describe tension generation and contractions in non-organized bundles .
Mechanical oscillations at the cellular scale
Like in the previous sections we use asterics to indicate the values of functions and variables in the steady state.
Generalized models as a universal approach to the analysis of nonlinear dynamical systems
However, there are two disadvantages to increasing the number of stars in our asterisms.
Astrometry.net: Blind astrometric calibration of arbitrary astronomical images
The first is that the probability that all k of the stars in an indexed asterism appear in the image and that all k of the stars in a query asterism appear in the index both decrease with increasing k .
Astrometry.net: Blind astrometric calibration of arbitrary astronomical images
As with all geometric hashing systems, our system is based around a pre-computed index of known asterisms.
Astrometry.net: Blind astrometric calibration of arbitrary astronomical images
This system works by using indexed asterisms to generate hypotheses, followed by quantitative verification of those hypotheses.
Astrometry.net: Blind astrometric calibration of arbitrary astronomical images
The best performance, in terms of the fraction of images that are recognized and the computation effort required, is achieved when the index of known asterisms is well-matched to the images to be recognized.
Astrometry.net: Blind astrometric calibration of arbitrary astronomical images
The number of Main Belt aster< ΣMBAMB f , where AMB is the area of the oids NMB is NMB ∼ Main Belt, ΣMB is the surface density of the proto-planetary disk and f is the fraction of primordial ob jects that survive ejection (which we assume to be a universal constant).
Asteroids in the Inner Solar System I - Existence
Do young globular clusters exist? No definite answer this year, but a caution that many candidates (2/3 of those in M31 for instance) are “asterisms” - faint associations with a few bright stars superimposed (Cohen et al. 2005).
Astrophysics in 2006
This is not quite what the Chinese meant by their equivalent of asterism (more like a compact constellation).
Astrophysics in 2006
The laser beam is relayed in free air to a pupil box at the upper ring of the telescope, where a holographic phase plate is used to produce a five stars asterism out of the single incoming beam.
Design of the wavefront sensor unit of ARGOS, the LBT laser guide star system
Figure 1.13: Left: asterism of the 5 Rayleigh LGS pro jected on sky at MMT.
Design of the wavefront sensor unit of ARGOS, the LBT laser guide star system
Moreover, some DBMS vendors, including Aster, Greenplum and Vertica, have started to integrate MR front-ends into their systems to run on largecluster machines.
Testing MapReduce-Based Systems
The one on the left classifies pixels into three classes: riparian woodland, green herbaceous vegetation, and spiny aster.
A Near-Term Quantum Computing Approach for Hard Computational Problems in Space Exploration
The six clusters correspond to the three classes used riparian woodland, green herbaceous vegetation, and spiny aster, plus three new classes corresponding to stressed herbaceous vegetation, sparsely vegetated/bare soil, and water.
A Near-Term Quantum Computing Approach for Hard Computational Problems in Space Exploration
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