red geyser

noun

A galaxy which has stopped star formation due to the energetic winds spewing forth from the active galactic nucleus, heating and disrupting gas accumulation and collapse to form new stars, resulting in a population of aging reddening stars.

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Meanings

nounred geyser (plural red geysers)

plural red geysers · alternative red geyser galaxy

  1. astronomyA galaxy which has stopped star formation due to the energetic winds spewing forth from the active galactic nucleus, heating and disrupting gas accumulation and collapse to form new stars, resulting in a population of aging reddening stars.

Origin

From red + geyser. Coined in 2016 by the research team at the SDSS-MaNGA Survey; from being a red galaxy with a galactic nucleus fountaining in its center.

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Cite this entry
APA

red geyser. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/red%20geyser

MLA

“red geyser.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/red%20geyser. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “red geyser,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/red%20geyser.

Source: red geyser on Wiktionary, CC BY-SA 4.0.