( n. )
A faint, cloudlike, self-luminous mass of matter situated beyond the solar system among the stars. True nebulae are gaseous; but very distant star clusters often appear like them in the telescope.
( n. )
A faint, cloudlike, self-luminous mass of matter situated beyond the solar system among the stars. True nebulae are gaseous; but very distant star clusters often appear like them in the telescope.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012