The story
Blend of bean + green pea galaxy. From being similar in appearance to green pea galaxies but larger, as with beans and peas.
Etymology from Wiktionary, CC BY-SA 4.0.
green bean galaxy
Today it means: A type of galaxy with a green tinge, thought to be caused by an ionization wave from a nearby quasar whose beam blasted through the galaxy, causing the glow. Full definition →