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Meaning of active galaxy | Babel Free

Noun CEFR B2

Definitions

A galaxy where a significant fraction of the energy output is not emitted by the normal components of a galaxy.
A galaxy with an active nucleus (AGN, active galactic nucleus)

CEFR level

B2

Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

active gravitational mass active ingredient active learning active lidar active listening active material