Snowball Earth

proper noun

The planet Earth when its surface was almost completely frozen some time earlier than 650 million years ago, according to a hypothesis aiming to explain certain enigmatic features in the geological record, such as apparently glacial sedimentary deposits found at tropical paleolatitudes.

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Meanings

proper noun
  1. geographyThe planet Earth when its surface was almost completely frozen some time earlier than 650 million years ago, according to a hypothesis aiming to explain certain enigmatic features in the geological record, such as apparently glacial sedimentary deposits found at tropical paleolatitudes.
Cite this entry
APA

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

MLA

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

Chicago

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

Source: Snowball Earth on Wiktionary, CC BY-SA 4.0.