Astron.
a number of stars of common origin held together as a group by gravitational attraction. Cf. globular cluster, open cluster, stellar association .
Astron.
a number of stars of common origin held together as a group by gravitational attraction. Cf. globular cluster, open cluster, stellar association .
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012