from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The time taken for the Earth to complete one revolution with respect to its apsides, usually defined as the time between perihelion passages.
from the GNU version of the Collaborative International Dictionary of English
- n. the time of the earth's revolution from perihelion to perihelion again, which is 365 days, 6 hours, 13 minutes, and 48 seconds.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. time of the earth's revolution from perihelion to perihelion again; 365 days and 6 hr and 13 min and 53.1 sec
Sorry, no etymologies found.