as·ter 
(ăstər)
(ăstər)n.
1. Any of various plants of the genus Aster or closely related genera in the composite family, having radiate flower heads with white, pink, or violet rays and usually a yellow disk.
2. The China aster.
3. Biology A star-shaped structure formed in the cytoplasm of an animal cell during mitosis, having raylike microtubules that surround the centrosome.
[Latin astēr, a type of plant, from Greek, star, type of daisy; see ster-3 in the Appendix of Indo-European roots.]
asterEuropean Michaelmas daisies
Aster amellus
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- inveteracy
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- inveterateness
- inviability
- inviable
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- invigorate
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- invigoration
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- invincibility
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- inviolacy