aster

A noun referring to a star-shaped structure formed in the cytoplasm of a cell, with fibers that radiate from the centrosome during mitosis.

• 🇨🇳指细胞有丝分裂期间在细胞质中形成的星状结构，由中心体发出的纤维呈放射状排列。

1. Flowering plant B2 formal

   Any of various plants of the genus Aster, known for their daisy-like flowers that typically bloom in autumn.

   • The garden was full of purple asters in late September.
   • She planted asters along the fence for a splash of fall color.
   • Asters attract bees and butterflies before the first frost.

   🇨🇳紫菀

   同义词: michaelmas daisy

2. Cellular structure C1 formal scientific

   A star-shaped structure of microtubules that forms in the cytoplasm around the centrosome during cell division.

   • The aster helps organize the spindle fibers during mitosis.
   • Under the microscope, the aster appeared as a radiant star.
   • Each centrosome is surrounded by an aster in dividing cells.

   🇨🇳星状体

• asters plural form
• asters' possessive plural form
• aster's possessive singular form