Word.ws English Dictionary

giant impact theory

giant impact theory noun: the theory that the Moon was formed from the impact of the Earth with a hypothetical protoplanet some 4.5 billion years ago during the Hadean eon, first proposed by geologist Reginald Daly.

Noun

giant impact theory

  1. The theory that the Moon was formed from the impact of the Earth with a hypothetical protoplanet some 4.5 billion years ago during the Hadean eon, first proposed by geologist Reginald Daly.
    Synonyms:
    giant-impact hypothesis, Theia Impact

Synonyms of giant impact theory

  • giant-impact hypothesis
  • Theia Impact

Forms of giant impact theory

alternative formgiant-impact theory

Questions about giant impact theory

What does giant impact theory mean?
Giant impact theory means the theory that the Moon was formed from the impact of the Earth with a hypothetical protoplanet some 4.5 billion years ago during the Hadean eon, first proposed by geologist Reginald Daly.
What part of speech is giant impact theory?
Giant impact theory is a noun.

Words near giant impact theory in the dictionary

  1. giant house spiders
  2. giant hyena
  3. giant hyenas
  4. giant hyssop
  5. giant hyssops
  6. giant impact theory
  7. giant isopod
  8. giant kelp
  9. giant kelpfish
  10. giant kettle
  11. giant kettles

Source and license

Adapted from Wiktionary: giant impact theory (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.

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