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Definition of Sideeal
Si*de"re*al (?), a. [L. sidereus,
from sidus, sideris, a constellation, a star. Cf.
Sideral, Consider, Desire.] 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, day,
month, year. 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.
Si*de"re*al (?), a. [L. sidereus,
from sidus, sideris, a constellation, a star. Cf.
Sideral, Consider, Desire.] 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, day,
month, year. 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.
- Webster's Unabridged Dictionary (1913)
- The Nuttall Encyclopedia
You found this page by searching for the keyword Sideeal
The proper spelling of this word is: Sidereal
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