Purple Earth hypothesis

proper noun

The hypothesis that the earliest photosynthetic lifeforms on Earth were based on retinal rather than chlorophyll, making the surface biosphere appear purplish.

Similar
PEH
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Meanings

proper nounthe Purple Earth hypothesis
  1. The hypothesis that the earliest photosynthetic lifeforms on Earth were based on retinal rather than chlorophyll, making the surface biosphere appear purplish.

    Synonyms: PEH

Synonyms & antonyms

proper nounThe hypothesis that the earliest photosynthetic lifeforms on Earth were based on retinal rather than chlorophyll, making the surface biosphere appear purplish.

Similar
PEH
Cite this entry
APA

Purple Earth hypothesis. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Purple%20Earth%20hypothesis

MLA

“Purple Earth hypothesis.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Purple%20Earth%20hypothesis. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “Purple Earth hypothesis,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/Purple%20Earth%20hypothesis.

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