Galaxy definitions

găl'ək-sē
noun
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A large, independent system of stars, typically containing millions to hundreds of billions of stars: the four classes of galaxies are spiral, barred spiral, elliptical, or irregular, depending on their shape.
noun
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Any of numerous large-scale collections of stars, gas, and dust that make up the visible universe. Galaxies are held together by the gravitational attraction of the material contained within them, and most are organized around a galactic nucleus into elliptical or spiral shapes, with a small percentage of galaxies classed as irregular in shape. A galaxy may range in diameter from some hundreds of light-years for the smallest dwarfs to hundreds of thousands of light-years for the largest ellipticals, and may contain from a few million to several trillion stars. Many galaxies are grouped into clusters, with the clusters themselves often grouped into larger superclusters.
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The Galaxy. The Milky Way.
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An assembly of brilliant, glamorous, or distinguished persons or things.

A galaxy of theatrical performers.

noun
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The definition of a galaxy is a large area, particularly of dust, stars and gas that makes up a universe.

An example of a galaxy is the Milky Way.

noun
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(now rare) The Milky Way; the apparent band of concentrated stars which appears in the night sky over earth. [from 14th c.]
noun
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(astronomy) Any of the collections of many millions of stars, galactic dust, black holes, etc. existing as independent and coherent systems, of which there are billions in the known universe. [from 19th c.]
noun
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(astronomy, dated) The Milky Way Galaxy, from when it was thought the Universe (our universe) had only one galaxy.
pronoun
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Origin of galaxy

Middle English galaxie the Milky Way from Late Latin galaxiās from Greek from gala galakt- milk melg- in Indo-European roots