bradyseism

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noun

A gradual uplift or descent of part of the Earth's surface caused by the filling or emptying of an underground magma chamber and/or hydrothermal activity, particularly in volcanic calderas

OriginEnglish seism ← Ancient Greek βρᾰδῠ́ς (brădŭ́s) ← Proto-Indo-European *gʷr̥dus →
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Meanings

nounbradyseism (countable and uncountable, plural bradyseisms)

plural bradyseisms

  1. countableuncountablegeographyA gradual uplift or descent of part of the Earth's surface caused by the filling or emptying of an underground magma chamber and/or hydrothermal activity, particularly in volcanic calderas

Origin

  1. Proto-Indo-European*gʷr̥dus
  2. Ancient Greekβρᾰδῠ́ς (brădŭ́s)
  3. Englishbrady-
  4. Englishseism
  5. Englishbradyseism

From brady- (“slow”) + seism.

Full word history & related roots →

Translations

Italian bradisismo
  • bradisismoA gradual uplift or descent of the Earth's surface
Cite this entry
APA

bradyseism. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/bradyseism

MLA

“bradyseism.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/bradyseism. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “bradyseism,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/bradyseism.

Source: bradyseism on Wiktionary, CC BY-SA 4.0.