from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The period of time between two successive transits of the mean sun; the standard for the 24-hour day measured from midnight to midnight.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. the average length of a solar day, used for practical timekeeping
from the GNU version of the Collaborative International Dictionary of English
- n. the mean or average of all the apparent solar days of the year.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. time for Earth to make a complete rotation on its axis
Sorry, no etymologies found.