Definition, Meaning & Synonyms

sideral

Adjective

/sɪˈdɪər.əl/

Definition

Relating to the stars or constellations.

Examples

The sideral navigation techniques used by ancient sailors relied heavily on the positions of the stars.
In astronomy, sideral time is a measure of the Earth’s rotation based on the position of stars.
The sideral zodiac encompasses the twelve constellations that the sun appears to pass through over the course of the year.

Meaning

The term ‘sideral’ is derived from the Latin word ‘sideralis,’ which pertains to the stars. It is often used in contexts regarding astronomy or celestial navigation.