Other forms: middays
Midday is twelve o'clock in the middle of the day. At midday, the midday sun, before midday.
True midday, when the sun is highest, almost never falls at twelve on the clock — time zones and summer time push it about, and it can be more than an hour out. The midday sun is when ultraviolet is strongest, which is why shade is advised then.
1nounmiddayTwelve o'clock in the middle of the day.
“We stopped for lunch at midday, when the sun was at its highest.”
midday is a time.
Also accepted in games: noon
Old English middaeg is mid plus day. Noon comes from a different route, the Latin ninth hour.
Old English
middæġ — midday, noon
Middle English
midday
English, today
midday
From Middle English midday, from Old English middæġ (“midday, noon”), equivalent to mid- + day. Cognate with Scots midday (“midday”), West Frisian middei (“midday, noon, afternoon”), Dutch middag (“midday, noon, afternoon”), German Mittag (“noon, midday, late morning, early afternoon”), Danish middag (“midday, noon, afternoon”), Norwegian Bokmål middag (“midday, noon, afternoon”), Swedish middag (“midday, noon, afternoon”).
Etymology from Wiktionary, CC BY-SA