Last Updated
：2025/11/20
tropical year
（ plural ）
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The time that it takes for the Sun to return to the same position along the ecliptic, as viewed from the Earth, especially: / A vernal equinox year, the time between two successive vernal equinoxes.
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tropical year
Astronomers measured the tropical year with high precision to improve the accuracy of the calendar.
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Astronomers measured the tropical year with high precision to improve the accuracy of the calendar.
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