- any of a large genus (Aster) of plants of the composite family, with purplish, blue, pink, or white daisylike flowers
- China aster
- a structure shaped like a star, formed during mitosis around the centrosome in the cytoplasm of a cell: not formed in seed plant cells
Origin of asterModern Latin ; from Classical Latin ; from Classical Greek astēr, star
star or starlike structure: diaster
Origin of -aster; from Classical Greek astēr, star
a (specified) person or thing that is inferior or not genuine: poetaster
Origin of -asterClassical Latin diminutive suffix
- 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.
- The China aster.
- Biology A star-shaped structure formed in the cytoplasm of an animal cell during mitosis, having raylike microtubules that surround the centrosome.
Origin of asterLatin astēr, a type of plant, from Greek, star, type of daisy; see ster-3 in Indo-European roots.
European Michaelmas daisies
From Latin aster, from Ancient Greek ἀστήρ (astēr).