We found one dictionary that defines the word galactic merger:

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1. Galactic merger: Wikipedia, the Free Encyclopedia

▸ Words similar to galactic merger ▸ Usage examples for galactic merger ▸ Idioms related to galactic merger ▸ Wikipedia articles (New!) ▸ Words that often appear near galactic merger ▸ Rhymes of galactic merger ▸ Invented words related to galactic merger