Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The time required for a single rotation of the earth on its axis in reference to any star or to the vernal equinox at the meridian, equal to 23 hours, 56 minutes, 4.09 seconds in units of mean solar time.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun astronomy one
day ofsidereal time ; the time in whichEarth rotates once around itsaxis , relative to the point of thevernal equinox (about 23 hours, 56 minutes, 4 seconds) - noun astronomy
rotational period ofEarth ; the time in whichEarth rotates around its axis 360 degrees
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun the time for one complete rotation of the earth relative to a particular star, about 4 minutes shorter than a mean solar day
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