active galactic nucleus

Noun CEFR C1

Definitions

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.

Equivalents

Deutschaktiver galaktischer Kern

1 more languages

Türkçeetkin galaktik çekirdek

CEFR level

C1

Advanced
This word is part of the CEFR C1 vocabulary — advanced level.

See all C1 English words →

See also

active galaxy active gravitational mass active ingredient active learning active lidar active listening

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