| Aster 1. (n.) A genus of herbs with compound white or bluish flowers; starwort; Michaelmas daisy. 2. (n.) A plant of the genus Callistephus. Many varieties (called China asters, German asters, etc.) are cultivated for their handsome compound flowers. Thesaurus Entries Golgi apparatus, aster, basal body, cell membrane, central apparatus, central body, centriole, centroplasm, centrosome, centrosphere, chloroplast, chromoplast, cytocentrum, flagella, kinoplasm, microbody, microcentrum, mitochondrion, pili, plasmodesmata, plastid, plastosome, ribosome, spherosome, spindle fibers, vacuole |