Noun: aster as-tu(r)
- Any of various chiefly fall-blooming herbs of the genus Aster with showy daisylike flowers
"The garden was alive with purple and white asters in September"
- Star-shaped structure formed in the cytoplasm of a cell having fibers like rays that surround the centrosome during mitosis
"The aster plays a crucial role in chromosome separation during cell division"
Derived forms: asters
Type of: anatomical structure, bodily structure, body structure, complex body part, flower, structure
Part of: genus Aster
Encyclopedia: Aster, Sidney