Dictionary.com
definitions
  • synonyms

solar day

noun
  1. 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.
  2. Law. the period of time from sunrise to sunset.
Show More

Origin of solar day

First recorded in 1755–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for solar day

solar day

noun
  1. the period of time during which the earth makes one complete revolution on its axis relative to the sunSee day (def. 6)
Show More
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

solar day in Science

solar day

  1. See under solar time.
Show More
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.