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sidéral signifie anglais

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sidéral adjectif

sidereal◼◼◼(of or relating to the stars)
adjective
[UK: saɪ.ˈdɪə.rɪəl] [US: saɪ.ˈdɪə.rɪəl]

sidereal◼◼◼(relating to a measurement of time relative to the position of the stars)
adjective
[UK: saɪ.ˈdɪə.rɪəl] [US: saɪ.ˈdɪə.rɪəl]

année sidérale nom {f}

sidereal year◼◼◼(orbital period)
noun

jour sidéral nom {m}

sidereal day◼◼◼(day of sidereal time)
noun
[UK: sˈaɪdərəl dˈeɪ] [US: sˈaɪdɚrəl dˈeɪ]

temps sidéral nom {m}

sidereal time◼◼◼(time measured by apparent motion of vernal equinox)
noun
[UK: saɪ.ˈdɪə.rɪəl ˈtaɪm] [US: saɪ.ˈdɪə.rɪəl ˈtaɪm]