sidereal
English
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sidereal
- /saɪˈdɪə.ɹi.əl/ UK
- /saɪˈdɪɚ.i.əl/ US
- /sɪˈdɪɚ.i.əl/ US
Where it comes from
From Latin sīdereus + -al (cf. Latin sīderālis), from sīdus (“star, constellation”), of unknown ultimate origin, likely a substrate language such as Pre-Greek.
adjective sideral · sidaereal
- Of or relating to the stars. These fringes of lamplight, struggling up through smoke and thousandfold exhalation, some fathoms into the ancient reign of Night, what thinks Boötes of them, as he leads his Hunting-Dogs over the Zenith in their leash of sidereal fire?
- Relating to a measurement of time relative to the position of the stars. Then, from a sufficient number of observations of synodic periods to give their mean, we obtain the sidereal period, or period with reference to the stars.
- Relating to a measurement of time relative to the point of the vernal equinox.
Translations
Talk about this word "sidereal." Wiktionary, via Micwyn, micwyn.com/word/sidereal. Accessed 6 Nov. 2026. sidereal. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/sidereal "sidereal." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/sidereal.Cite this
@misc{sidereal_2026,
title = {sidereal},
howpublished = {Wiktionary, via Micwyn},
year = {2026},
url = {https://micwyn.com/word/sidereal},
urldate = {2026-11-06}
}
