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A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and ... However, the word Universe was later understood to mean the entirety of existence, so this expr...

Galaxy | Define Galaxy at Dictionary.com


Galaxy definition, a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space. See more.

galaxy - Dictionary Definition : Vocabulary.com


A galaxy is a collection of stars and planets that are held together by gravity. In a galaxy, the celestial bodies rotate around a central object.

What is a Galaxy? | NASA Blueshift


Sep 17, 2012 ... If there were only major galaxies with spiral arms, like Andromeda and the Milky Way, then a formal definition might not be necessary – you ...

Galaxy - definition of galaxy by The Free Dictionary


a. Any of numerous large-scale aggregates of stars, gas, and dust that constitute the universe, containing an average of 100 billion (10<sup>11</sup>) solar masses and ...

galaxy Meaning in the Cambridge English Dictionary


galaxy meaning, definition, what is galaxy: one of the independent groups of stars in the universe. Learn more.

Galaxy dictionary definition | galaxy defined - YourDictionary


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. YourDictionary ...

galaxy - definition of galaxy in English from the Oxford dictionary


Meaning, pronunciation and example sentences, English to English reference ... 1.1 (the Galaxy) The galaxy of which the solar system is a part; the Milky Way.

What Is a Galaxy? | Science | AAAS


Jan 27, 2011 ... A pair of astronomers call for a debate on a tricky definition. ... You might think a galaxy is simply a large group of stars, but just how many stars ...

Galaxy | Definition of Galaxy by Merriam-Webster


astronomy : any one of the very large groups of stars that make up the universe. the Galaxy : the galaxy in which we live. : a large group of important or ...

any large and brilliant or impressive assemblage of persons or things: a galaxy of opera stars.
Source: Dictionary.com
galaxy | Define galaxy at Dictionary.com
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