supergalaxy
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su·per·gal·ax·y
(so͞o′pər-găl′ək-sē)n. pl. su·per·gal·ax·ies
A very large group of galaxies.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
su•per•gal•ax•y
(ˈsu pərˌgæl ək si)n., pl. -ax•ies.
a system of galaxies.
[1925–30]
su`per•ga•lac′tic (-gəˈlæk tɪk) adj.
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