Astro- (noun) Definition, Meaning & Examples

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  1. a combining form with the meaning “pertaining to stars or celestial bodies, or to activities, as spaceflight, taking place outside the earth's atmosphere,” used in the formation of compound words: astronautics; astrophotography.
combining form
  1. indicating a heavenly body, star, or star-shaped structure
  2. indicating outer space
    Astro- (noun) Definition, Meaning & Examples

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