sidereal time
noun/saɪˈdɪə.ɹiəl taɪm/ · /səɪˈdɪə.ɹiəl taɪm/
1
Astronomy, Natural sciences Time measured by the apparent diurnal motion of the vernal equinox; approximated by that based on the rotation of planet Earth relative to the seemingly fixed stars.
- Hypernyms
- time