sidereal-day
sidereal day
noun Astronomy.
the interval between two successive passages of the vernal equinox over the meridian, being about four minutes shorter than a mean solar day.
Origin:
1785–95
1785–95
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins English Dictionary - Complete & Unabridged 10th Edition
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Sidereal-day
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