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单词 aster
释义

aster

1 of 2

noun

as·​ter ˈa-stər How to pronounce aster (audio)
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
b
: china aster
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

Illustration of aster

Illustration of aster
  • aster 1a

-aster

2 of 2

noun suffix

: one that is inferior or not genuine
criticaster

Example Sentences

Recent Examples on the Web
Noun
The key vector for aster yellows is the aster leafhopper. Miri Talabac, Baltimore Sun, 28 July 2022 Here are six wildflowers to grace your yards in various conditions: Read full article Smooth aster. BostonGlobe.com, 29 May 2022 This member of the aster family is grown for its unique purple leaves--the leaves are really green with tiny purple hairs. Janet Carson, Arkansas Online, 22 May 2022 Late season: bottle gentian, Gentiana andrewsii; showy goldenrod, Solidago speciosa (superfood); New England aster, Aster novae-angliae (superfood); white turtlehead, Chelone glabra (immune builder). Jennifer Rude Klett, Milwaukee Journal Sentinel, 13 Apr. 2022 Plants in the aster, mint, carrot, and milkweed families are among the most visited if your space is limited. Miri Talabac, Baltimore Sun, 6 Apr. 2022 King Richard co-star Saniyya Sidney wore an aster-blue off-the-shoulder gown by Zuhair Murad. Laurie Brookins, The Hollywood Reporter, 27 Feb. 2022 Like its Eastern cousin, this western native aster blooms from late summer into fall. Thad Orr, Better Homes & Gardens, 3 Nov. 2021 The sturdier parts of a plant, such as the woody trunk and branches of a tree, the roots of an aster or coneflower, or the underground bulbs of tulips, wait out the winter. Beth Botts, chicagotribune.com, 19 Dec. 2021 See More

Word History

Etymology

Noun suffix

Middle English, from Latin, suffix denoting partial resemblance

First Known Use

Noun

1664, in the meaning defined at sense 1a

Kids Definition

aster

noun

as·​ter ˈa-stər How to pronounce aster (audio)
: any of various herbs related to the daisy that have leafy stems and white, pink, purple, or yellow flower heads which bloom in the fall

Medical Definition

aster

noun

as·​ter ˈas-tər How to pronounce aster (audio)
: 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

called also cytaster

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更新时间:2025/1/11 4:31:22