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protoplanet

[ proh-toh-plan-it ]

noun

, Astronomy.
  1. the collection of matter, in the process of condensation, from which a planet is formed.

protoplanet

/ ˌprəʊtəʊˈplænɪt /

noun

  1. a planet in its early stages of evolution by the process of accretion

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Word History and Origins

Origin of protoplanet1

First recorded in 1945–50; proto- + planet

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protophloemprotoplanetary disk

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