Astronomy. the time interval between two successive transits by the sun of the meridian directly opposite that of the observer; the 24-hour interval from one midnight to the following midnight.
Law. the period of time from sunrise to sunset.
TAKE ROUND 2 OF OUR PSAT VOCABULARY QUIZ!
Here is our second set of teacher-selected PSAT vocabulary words. Do you know the meanings of these terms?
Question 1 of 10
Origin of solar day
First recorded in 1755–65
Words nearby solar day
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for solar day
the period of time during which the earth makes one complete revolution on its axis relative to the sunSee day (def. 6)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for solar day
See under solar time.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.