Ca-tăs'ter-ism, n.

n. [Gr. καταστερισμός, from καταστερίζειν, to place among the stars, from κατά, down, and ἀστερίζειν, to make into a star, from ἀστήρ, star.] A placing among the stars; a catalogue of stars. “The catasterisms of Eratosthenes.” Whewell.