hetegony

H4E1T1E1G2O1N1Y4

noun

The study of the origin of the planets in the solar system.

OriginAncient Greek ἔτης ← Proto-Indo-European *swé →
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Meanings

nounhetegony (uncountable)
  1. uncountableThe study of the origin of the planets in the solar system.

    Because the origin of the solar system is essentially a question of the repeated formation of secondary bodies around a primary body, the term hetegony (from Greek hetairos or hetes, companion) has been suggested.

    1972, Robert Duncan Enzmann, Third Conference on Planetology and Space Mission Planning

Origin

  1. Proto-Indo-European*swé“self”
  2. Ancient Greekἔτης“clansman”
  3. Englishhetegony

From Ancient Greek ἔτης (étēs, “clansman”), from Proto-Indo-European *swé (“self”), plus -gony. See also ἑταῖρος (hetaîros, “companion”). Probably invented by Hannes Alfvén.https://web.archive.org/web/20170401121945/http://worldwidewords.org/nl/lumr.htm

More words from Ancient Greek, Proto-Indo-European

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Cite this entry
APA

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

MLA

“hetegony.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/hetegony. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “hetegony,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/hetegony.

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