Learn how to say Galaxies correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word galaxy:
noun (plural galaxies)
a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
(the Galaxy) the galaxy of which the solar system is a part; the Milky Way.
a large group of impressive people or things:
the four musicians have played with a galaxy of stars
late Middle English (originally referring to the Milky Way): via Old French from medieval Latin galaxia, from Greek galaxias (kuklos) ‘milky (vault)’, from gala, galakt- ‘milk’