active galactic nucleus

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active galactic nucleus

noun active galactic nuclei

A compact region at the center of a galaxy that has a much higher than normal luminosity over at least some portion of the (measurable) electromagnetic spectrum.
Similar: AGN

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noun region

中文	活動星系核 /活动星系核 huódòng xīngxìhé
Deutsch	aktiver galaktischer Kern

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MLA

"active galactic nucleus." Wiktionary, via Micwyn, micwyn.com/word/active%20galactic%20nucleus. Accessed 6 Nov. 2026.

APA

active galactic nucleus. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/active%20galactic%20nucleus

Chicago

"active galactic nucleus." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/active%20galactic%20nucleus.

BibTeX

@misc{active_galactic_nucleus_2026,
  title = {active galactic nucleus},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/active%20galactic%20nucleus},
  urldate = {2026-11-06}
}