sidereal
[ sahy-deer-ee-uh l ]
/ saɪˈdɪər i əl /
adjective Astronomy.
determined by or from the stars: sidereal time.
of or relating to the stars.
Origin of sidereal
1625–35; < Latin
sīdere(us) of, belonging to the stars (
sīder-, stem of
sīdus star, constellation +
-eus adj. suffix) +
-al1
OTHER WORDS FROM sidereal
si·de·re·al·ly, adverb non·si·de·re·al, adjective un·si·de·re·al, adjectiveWords nearby sidereal
Example sentences from the Web for sidereal
British Dictionary definitions for sidereal
sidereal
/ (saɪˈdɪərɪəl) /
adjective
of, relating to, or involving the stars
determined with reference to one or more stars
the sidereal day
Derived forms of sidereal
sidereally, adverbWord Origin for sidereal
C17: from Latin
sīdereus, from
sīdus a star, a constellation
Scientific definitions for sidereal
sidereal
[ sī-dîr′ē-əl ]
Relating to the stars or constellations.
Measured with respect to the background of fixed stars instead of the Sun.