Etymology

astrodynamics

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Today it means: The study of the motion of rockets and spacecraft, usually from Newton's laws of motion, Newtonian gravity, and Kepler's laws. Full definition →

English dynamics ← French dynamique ← Ancient Greek δυναμικός (dunamikós)
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The story

  1. Proto-Indo-European*h₂eHs-
  2. Proto-Indo-European*h₂stḗr
  3. Proto-Hellenic*astḗr
  4. Ancient Greekἀστήρ (astḗr)
  5. Ancient Greekᾰ̓́στρον (ắstron)
  6. Englishastro-
  7. Proto-Indo-European*dewh₂-
  8. Proto-Hellenic*dunamai
  9. Ancient Greekδῠ́νᾰμαι (dŭ́nămai)
  10. Ancient Greekδύναμις (dúnamis)
  11. Ancient Greekδυναμικός (dunamikós)
  12. Frenchdynamique
  13. Englishdynamic
  14. Englishdynamics
  15. English todayastrodynamics

From astro- + dynamics.

Etymology from Wiktionary, CC BY-SA 4.0.