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protoplanetary disk

/ prō′tə-plănĭ-tĕr′ē /

  1. A rotating disk of dust and gas that surrounds the core of a developing solar system. It may eventually develop into orbiting celestial bodies such as planets and asteroids.
  2. See more at planetesimal


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Example Sentences

We see the protoplanetary disk around it at an angle, but nearly “face-on.”

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protoplanetprotoplasm