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protogalaxy

US:USA pronunciation: respellingUSA pronunciation: respelling(prō′tō galək sē, prōtō gal′-)


WordReference Random House Unabridged Dictionary of American English © 2026
pro•to•gal•ax•y  (prō′tō galək sē, prōtō gal′-),USA pronunciation n., pl. -ax•ies. [Astron.]
  1. Astronomythe large concentration of gas and dust from which a galaxy is formed.
  • proto- + galaxy 1945–50

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