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sidecar
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-- Sidereal --
Sidereal clock
sidereal day
sidereal hour
sidereal month
sidereal time
sidereal year
Siderealize
Sidereous
Siderite
Sideritis
sideroblast
sideroblastic anaemia
sideroblastic anemia
siderochrestic anaemia
siderochrestic anemia
siderocyte

Sidereal

Si`de´re`al
a.1.Relating to the stars; starry; astral; as, sidereal astronomy.
2.(Astron.) Measuring by the apparent motion of the stars; designated, marked out, or accompanied, by a return to the same position in respect to the stars; as, the sidereal revolution of a planet; a sidereal day.
Sidereal clock
See under Clock, Day, etc.
Sideral time
time as reckoned by sideral days, or, taking the sidereal day as the unit, the time elapsed since a transit of the vernal equinox, reckoned in parts of a sidereal day. This is, strictly, apparent sidereal time, mean sidereal time being reckoned from the transit, not of the true, but of the mean, equinoctial point.
Adj.1.sidereal - of or relating to the stars or constellations; "sidereal bodies"; "the sidereal system"
2.sidereal - (of divisions of time) determined by daily motion of the stars; "sidereal time"
Antonyms:
civil - (of divisions of time) legally recognized in ordinary affairs of life; "the civil calendar"; "a civil day begins at mean midnight"
Cynthian, anagalactic, asteroidal, astral, astrologic, astrologistic, astrologous, astronomic, astrophysical, celestial, circumplanetary, cislunar, empyreal, empyrean, equinoctial, extragalactic, galactic, heavenly, heliacal, intercosmic, interplanetary, intersidereal, interstellar, lunar, lunary, lunate, lunular, lunulate, meteoric, meteoritic, nebular, nebulose, nebulous, planetal, planetarian, planetary, planetesimal, semilunar, solar, sphery, star-spangled, star-studded, starry, stellar, stellary, terrestrial, uranic, zodiacal

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