Word.ws English Dictionary

Purple Earth hypothesis

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.

Proper noun

the 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 of Purple Earth hypothesis

Questions about Purple Earth hypothesis

What does Purple Earth hypothesis mean?
Purple Earth hypothesis means the hypothesis that the earliest photosynthetic lifeforms on Earth were based on retinal rather than chlorophyll, making the surface biosphere appear purplish.
What part of speech is Purple Earth hypothesis?
Purple Earth hypothesis is a proper noun.

Words near Purple Earth hypothesis in the dictionary

  1. purple corals
  2. purple death
  3. Purple Dragon Book
  4. purple drank
  5. purple dye murex
  6. Purple Earth hypothesis
  7. purple emperor
  8. purple emperors
  9. purple everlasting
  10. purple everlastings
  11. purple finch

Source and license

Adapted from Wiktionary: Purple Earth hypothesis (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “Purple Earth hypothesis.” Word.ws, https://word.ws/purple_earth_hypothesis. Based on Wiktionary, CC BY-SA 4.0.