Word.ws English Dictionary

sidereal days

sidereal days is the plural of sidereal day.

Meaning of sidereal day

Noun

sidereal day (plural sidereal days)

  1. One day of sidereal time; the time in which Earth rotates once around its axis, relative to the point of the vernal equinox (about 23 hours, 56 minutes, 4 seconds).
  2. The rotational period of Earth; the time in which Earth rotates around its axis 360 degrees.

Questions about sidereal days

What is sidereal days the plural of?
Sidereal days is the plural of sidereal day.

Words near sidereal days in the dictionary

  1. siderazot
  2. siderazote
  3. sidereal
  4. sidereal astrology
  5. sidereal day
  6. sidereal days
  7. sidereal month
  8. sidereal months
  9. sidereal orbital period
  10. sidereal orbital periods
  11. sidereal period

Source and license

Adapted from Wiktionary: sidereal days (page history and authors); sidereal day (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “sidereal days.” Word.ws, https://word.ws/sidereal_days. Based on Wiktionary, CC BY-SA 4.0.