Definition of sidereal
English to English adjective - of or relating to the stars or constellations
Sidereal bodies.
The sidereal system.
source: WordNet 3.0 - (of divisions of time) determined by daily motion of the stars
Sidereal time.
source: WordNet 3.0 - Relating to the stars; starry; astral; as, sidereal astronomy.
source: Webster 1913
Visual Synonyms 
Nearby Word
sidereal, sideral, sectral, sudoral, sectoral, ski trail, sectorial, sterol, streel, strale, sequestral, sauterelle, sterile, sutural, storial, stearyl, souterly, sterility, suturally, suctorial
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