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AGN

American  

abbreviation

  1. Astronomy. active galactic nucleus.


AGN British  

abbreviation

  1. active galactic nucleus See active galaxy

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Dutch insurer and asset manager Aegon AGN -7.64%decrease; red down pointing triangle plans to relocate its business to the U.S. and rebrand as Transamerica Inc., a move aimed at accelerating growth in the region.

From The Wall Street Journal • Dec. 10, 2025

"The AGN has endorsed Ethiopia," Richard Muyungi, the group's chair told AFP.

From Barron's • Nov. 11, 2025

Most of the roughly 100 known TDEs have not occurred within AGN systems, which are already surrounded by dense, swirling disks of material feeding the central black hole.

From Science Daily • Nov. 7, 2025

If the finding bears out, it would mark the first time researchers have charted an AGN starting up, which could reveal clues to its cause.

From Science Magazine • Jun. 17, 2024

These can be quite volatile, such as blazars, which are AGN that shoot out jets of ionized matter traveling at nearly the speed of light.

From Salon • Apr. 30, 2023