- The definition of midday is noon, or the middle of the day.
12:00 noon is an example of midday.
midday definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
the middle of the day; noon
Origin: Middle English middai ; from Old English middæg
of or at midday
midday definition by American Heritage Dictionary
The middle of the day; noon.