planetary nebula nucleus

noun

The remnant hot luminous core of the stellar progenitor of the planetary nebula, which ionizes the surrounding planetary nebula.

Similar
PNN
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Meanings

nounplanetary nebula nucleus (plural planetary nebula nuclei)

plural planetary nebula nuclei

  1. astronomyThe remnant hot luminous core of the stellar progenitor of the planetary nebula, which ionizes the surrounding planetary nebula.

    Synonyms: PNN

Synonyms & antonyms

nounThe remnant hot luminous core of the stellar progenitor of the planetary nebula, which ionizes the surrounding planetary nebula.

Similar
PNN

Origin

From planetary nebula + nucleus.

Full word history & related roots →
Cite this entry
APA

planetary nebula nucleus. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/planetary%20nebula%20nucleus

MLA

“planetary nebula nucleus.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/planetary%20nebula%20nucleus. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “planetary nebula nucleus,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/planetary%20nebula%20nucleus.

Source: planetary nebula nucleus on Wiktionary, CC BY-SA 4.0.