🇬🇧 en nl 🇳🇱

sideral

stellair

sidereal adjective

  /saɪˈdɪə.ɹi.əl/ , /saɪˈdɪɚ.i.əl/ , /sɪˈdɪɚ.i.əl/
  • (astronomy) Relating to a measurement of time relative to the position of the stars.
astrologisch
Wiktionary Links