from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The period of time required for the earth to make one complete revolution around the sun, measured from one vernal equinox to the next and equal to 365 days, 5 hours, 48 minutes, 45.51 seconds.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun The time it takes the
Earthto pass once around the Sun, for instance from vernal equinoxto vernal equinox.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun the time for the earth to make one revolution around the sun, measured between two vernal equinoxes
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