solar day


Definition of solar day 

: the interval between transits of the apparent or mean sun across the meridian at any place

Examples of solar day in a Sentence

Recent Examples on the Web

The length of a solar day, measured by the time between the sun’s passage of any particular point in the sky, is rarely 24 hours precisely. Scott Dance,, "Baltimore's earliest sunrise of the year comes Thursday," 13 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'solar day.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of solar day

1751, in the meaning defined above

Keep scrolling for more

Learn More about solar day

Statistics for solar day

Look-up Popularity

Time Traveler for solar day

The first known use of solar day was in 1751

See more words from the same year

More from Merriam-Webster on solar day Encyclopedia article about solar day

Comments on solar day

What made you want to look up solar day? Please tell us where you read or heard it (including the quote, if possible).


to reject or criticize sharply

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!


Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!