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See solar year.
Equals the time interval between two consecutive passages of the Sun, in one direction, through the Earth’s equatorial plane (or from vernal equinox to vernal equinox; 365 days, 5 hr, 48 min, 46 sec).
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|Noun||1.||tropical year - the time for the earth to make one revolution around the sun, measured between two vernal equinoxes|
year - the period of time that it takes for a planet (as, e.g., Earth or Mars) to make a complete revolution around the sun; "a Martian year takes 687 of our days"