'Catasterism' definitions:

Definition of 'Catasterism'

From: GCIDE

Catasterism \Ca*tas"ter*ism\, n. [Gr. ?, fr. ? to place among the stars.] A placing among the stars; a catalogue of stars. [1913 Webster]
The catasterisms of Eratosthenes. --Whewell. [1913 Webster]