Galaxy (noun)

  1. A system of millions or billions of stars, together with gas, dust, and dark matter, held together by gravitational attraction.
  2. A collection of similar objects or people.

Origin:

Late 16th century: from greek galaxias, from gala 'milk' + -axia 'having the nature of' (because the milky way was thought to resemble a spill of milk in the night sky).

Examples:

  1. The Milky Way is a barred spiral galaxy.
  2. The film industry is a galaxy of stars and talented people.
  3. Astronomers have discovered a new galaxy in the observable universe.
  4. The galaxy of galaxies is known as the universe.
  5. The galaxy is thought to be around 13.8 billion years old.
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