hetegony

English

Etymology

From Ancient Greek ἔτης (étēs, “clansman”), from Proto-Indo-European *swé (“self”), plus -gony. See also ἑταῖρος (hetaîros, “companion”).

Probably invented by Hannes Alfvén.[1]

Noun

hetegony (uncountable)

1. The study of the origin of the planets in the solar system.
   • 1972, Robert Duncan Enzmann, Third Conference on Planetology and Space Mission Planning:

     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.

Related terms

• hetegonic