sidereal hour

1. 1.

   1/24 of a sidereal day

   Broaderhoursidereal time

Questions about sidereal hour

What does sidereal hour mean?

sidereal hour means "1/24 of a sidereal day".

Is sidereal hour a common word?

sidereal hour is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.