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Definition of Planetary ring
1. Noun. (astronomy) a ring of dust and small particles that orbits a planet (such as Saturn) as a flat disc; gaps in the ring are due to the presence of shepherd moons ¹
¹ Source: wiktionary.com
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1. Noun. (astronomy) a ring of dust and small particles that orbits a planet (such as Saturn) as a flat disc; gaps in the ring are due to the presence of shepherd moons ¹
¹ Source: wiktionary.com