[1] : The Collaborative International Dictionary of English v.0.48

sidereal \side"real\, a. l. sidereus, from sidus, sideris, a
   constellation, a star. cf. sideral, consider, desire.
   1. relating to the stars; starry; astral; as, sidereal
      astronomy.
      1913 webster

   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.
      1913 webster

   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.
      1913 webster
see also:
sideral consider desire sidereal clock day month 
year clock day sideral time 

Geologic Time >> G Words
Geologic Time, definition of term: Geologic Time
geologic+time_pag1.html

High Time >> H Words
High Time, definition of term: High Time
high+time_pag1.html

Free Time >> F Words
Free Time, definition of term: Free Time
free+time_pag1.html

Common Time >> C Words
Common Time, definition of term: Common Time
common+time_pag1.html

Big Time >> B Words
Big Time, definition of term: Big Time
big+time_pag1.html

Access Time >> A Words
Access Time, definition of term: Access Time
access+time_pag1.html

At A Time >> A Words
At A Time, definition of term: At A Time
at+a+time_pag1.html

From Time To Ti >> F Words
From Time To Ti, definition of term: From Time To Ti
from+time+to+ti_pag1.html