daytime /ˈdeɪtaɪm/adjective 2noun 1forms 1 adjective2 •Pertaining to daytime; appropriate to the day.The forecast calls for a slight warming trend in the coming days, with sunny skies and daytime temperatures reaching the midteens on Sunday and Monday, when the men will hit the snowboard course. — 2022 •Happening during the day. noun1 •The time of daylight; the time between sunrise and sunset. formsdaytimes