Related terms
- en nova (n) ➜
- en nova remnant (n) ➜
- en protoplanetary disk ➜
- en planetary nebula ➜
- en supernova remnant (n) ➜
Word forms
- en protoplanetary nebulae (n) ➜
- en protoplanetary nebulas (n) ➜
Synonyms
- en preplanetary nebula (n) ➜
- en preplanetary nebula ➜
Links to other resources
- en.wiktionary.org protoplanetary nebula