protoplanetary nebula
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English
[edit]Etymology
[edit]From proto- + planetary nebula.
Noun
[edit]protoplanetary nebula (plural protoplanetary nebulae or protoplanetary nebulas)
- (astronomy) A stage in stellar evolution when a star starts to shed its outer layers before coming a true planetary nebula.
Synonyms
[edit]Translations
[edit]stage in stellar evolution
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